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  #181  
Old Posted Apr 8, 2022, 7:46 PM
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I liked the idea as well until someone pointed out that it could be problematic for trams (noise and maintenance).
I can't see a curve being an issue for trams on a 563 meter span.

Here I overlaid a subtle 563m curve over the loudest and most maintenance inducing section of the Confederation Line.

[url=https://flic.kr/p/2ndiQ3a]
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Last edited by Harley613; Apr 8, 2022 at 7:46 PM. Reason: grammar
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  #182  
Old Posted Nov 25, 2022, 4:53 PM
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Confessions d’Alexandra - Les adieux d’un pont centenaire



TEXTE : STÉPHANIE RHÉAUME
PUBLIÉ 24 Novembre 2022 À 11 H 29


Ce n’est pas tous les jours que s’éteint un emblème de la capitale fédérale. Avant que le pont interprovincial ne soit démoli pour de bon, nous avons voulu faire entendre sa voix. Cette grande dame qui a servi la région pendant plus d’un siècle, Alexandra, signe ici une dernière lettre avant de faire ses adieux à tous ceux qui ont fait un bout de chemin avec elle.

Je m’appelle Alexandra. J’ai vu le jour officiellement en 1901 sur la rivière des Outaouais entre Ottawa et ce qui s'appelait, à l'époque, Hull.

Avant ma venue au monde, certains hommes politiques ont craint que je ne fasse de l’ombre au jeune parlement canadien. Plutôt qu’une bavure esthétique dans le paysage, je peux me vanter d’être devenue un monument mythique pour un grand nombre de touristes de passage.



Entre vous et moi, ce qui me touche bien davantage, ce sont les témoignages d’affection des citoyens en provenance des deux côtés de la rive, qui ne cessent d’affluer depuis ma mort annoncée.

De guerre lasse, je me retire après plus de 120 ans d’existence. Ma vieille carcasse est rongée par la corrosion. Je montre déjà plusieurs signes de fatigue, mais j’ai encore l’énergie nécessaire pour vous raconter quelques souvenirs bercés par la Kitchissippi, la grande rivière des Anishinabeg.



N’importe quel parent vous le dira, trouver un prénom pour sa progéniture se révèle d’une importance capitale. Dans mon cas, quelques raccourcis se sont imposés avant qu’Alexandra ne l’emporte.

Au moment de mon inauguration en mars 1901, je n’ai pas de nom à proprement dit. Dans les annales de l’histoire, on parle plutôt de moi en utilisant un adjectif qui caractérise mon mandat. Je suis le pont interprovincial. C’est bien la tâche difficile à laquelle je me suis affairée tous les jours : unir l’Ontario et le Québec.

D’autres, tout aussi pragmatiques, ont préféré m’accoler le sobriquet de Beemer en clin d'œil à mon créateur, l’homme d’affaires américain Horace Jansen Beemer. Les doyens de la région ne jurent encore que par cette appellation lorsqu’il est question de moi.


Le pont interprovincial au moment de sa construction.
PHOTO : MUSÉE CANADIEN DE L'HISTOIRE / W HARMER



L’entrepreneur américain Horace J. Beemer a contribué au développement ferroviaire du pays. On lui doit la construction du pont interprovincial sur la rivière des Outaouais, mais il a aussi contribué au réseau du chemin de fer au lac Saint-Jean.
PHOTO : MUSÉE MCCORD STEWART


La Dominion Bridge Company était réputée pour la qualité de ses structures en acier.
PHOTO : BIBLIOTHÈQUE ET ARCHIVES CANADA


Ma construction avait été confiée à Beemer ainsi qu’à la Dominion Bridge Company, spécialisée dans la fabrication de ponts et de structures métalliques partout au Canada.

J’ai dû patienter six mois, soit jusqu’en septembre 1901, avant de devenir Alexandra. Ce changement s’inscrit dans la visite au pays du duc de Cornouailles, le futur roi George V et fils de la reine consort… Alexandra de Danemark.

Cette dernière était l’épouse du roi Édouard VII, monté sur le trône en 1901 pour succéder à sa mère, la reine Victoria, décédée en janvier.

Édouard VII aura hérité d’une artère achalandée de la capitale, l’avenue King-Edward renommée en son honneur en 1906; et sa compagne, d’un pont enjambant la rivière des Outaouais.


Le roi Édouard VII et son épouse, la reine Alexandra de Danemark.
PHOTO : BIBLIOTHÈQUE ET ARCHIVES CANADA


Le président national de la Société de la Couronne du Canada, Thomas Morin-Cabana, dresse des parallèles intéressants entre la reine consort et moi. Il souligne qu’Alexandra de Danemark était une souveraine très proche de son peuple, rassembleuse et ouverte d’esprit.

Comme elle a pu tisser des liens avec son peuple, le pont tisse des liens entre deux peuples, note-t-il.

Toutefois, mon pouvoir emblématique a bien failli me coûter mon prénom féminin, alors que je m’apprêtais à célébrer mon centenaire.

En 2000, le maire de Hull de l’époque, Yves Ducharme, et le maire par intérim d’Ottawa, Allan Higdon, avaient proposé de me rebaptiser pour honorer la mémoire de l’ancien premier ministre canadien Pierre Elliott Trudeau, décédé en septembre cette année-là. Par chance, leurs doléances sont demeurées lettre morte.



Tantôt grésillante et métallique lorsqu’on me parcourt en voiture, tantôt battant au rythme des planches de bois qui se soulèvent au passage des cyclistes… ma voix restera sans nul doute gravée dans l’esprit des gens qui m’auront fréquentée.

Pourtant, c’est à l’expansion du chemin de fer que je dois mon existence.

L’objectif premier, c’était de construire un pont ferroviaire afin de relier les voies ferrées du côté du Québec et du côté d’Ottawa, explique l’historien Raymond Ouimet. Il souligne que c’était aussi un moyen de desservir l'arrière-pays, comme la Haute-Gatineau et le Pontiac.


Les rails menant au pont Alexandra, à côté des écluses du canal Rideau, au début du 20e siècle.
PHOTO : BIBLIOTHÈQUE ET ARCHIVES CANADA


À l’origine, le pont Alexandra servait au passage des trains, du tramway, des piétons et des calèches.
PHOTO : BIBLIOTHÈQUE ET ARCHIVES CANADA / WILLIAM JAMES TOPLEY


Ainsi, au début du 20e siècle, le roulis du train et du tramway s’accordait aux pas cadencés des chevaux tirant leurs calèches.

Le passage d’un premier train sur ma structure a d’ailleurs créé l’événement. Le 22 avril 1901, le propriétaire de l’hôtel Cottage à Hull, Noël Valiquette, brisait la traditionnelle bouteille de champagne sur la locomotive. Un délicieux fracas de verre pour souligner ce grand jour.

Sans tambour ni trompette, à la fin des années 1960, on tournait la page sur tout un pan de l’histoire ferroviaire canadienne en retirant complètement mes rails. J’entreprenais alors une reconversion comme axe incontournable pour la circulation automobile. Sans le savoir, j’empruntais là le dernier virage avant de prendre officiellement ma retraite 50 ans plus tard.



Après avoir partagé tous ces souvenirs, j’en oubliais presque l’essentiel : je suis un pont de type cantilever, une véritable prouesse d’ingénierie.

Je suis en quelque sorte la grande sœur du pont de Québec (1919) et du pont Jacques-Cartier (1930), tous deux appartenant à la famille des ponts en porte-à-faux.


Le pont de Québec au moment de sa construction. Avec une portée libre de 549 m, il est désormais le pont de type cantilever le plus long au monde.
PHOTO : MUSÉE MCCORD



La construction du pont Jacques-Cartier a été confiée à la Dominion Bridge Company, la même entreprise responsable de la construction du pont Alexandra.
PHOTO : ARCHIVE VILLE DE MONTRÉAL


Dans ma prime jeunesse, je me pavanais déjà tout en longueur. Ma travée principale mesurait 170 mètres : la plus longue du Canada et l’une des plus longues du monde à l’époque.

Vous pensez que je joue la carte de la prétention? Parlez donc à Munzer Hassan qui donne le cours sur la conception et l’analyse des ponts à l’École de technologie supérieure de l’Université du Québec à Montréal. Selon lui, ma conception, ma fabrication et ma construction relèvent de l’exploit.

« C'était une première. Certainement, ça fait de cette structure-là une icône de l’époque. Les autres ponts qui ont été construits après, même s’ils sont plus grands, probablement, ils ont profité de cette expérience-là. »
— Une citation de Munzer Hassan, professeur, École de technologie supérieure

En 1995, la Société canadienne de génie civil m’a d’ailleurs fait l’honneur d’une désignation comme lieu historique national de génie civil. La Ville d’Ottawa m’a aussi inscrite à son registre du patrimoine en 2017 en raison de mes attributs patrimoniaux et de mon intérêt historique.

En rétrospective, j’ai eu une vie riche d’expériences enivrantes, attirant même quelques célébrités comme le pape Jean-Paul II et la reine Élisabeth II.


Un cortège de sécurité entoure le page Jean-Paul II sur le pont Alexandra, au cours d’une visite à Ottawa en septembre 1984.
PHOTO : RADIO-CANADA


La papemobile traverse la rivière des Outaouais en empruntant le pont Alexandra, en septembre 1984.
PHOTO : RADIO-CANADA


Jean-Paul II, à bord de la papemobile, salue la foule rassemblée sur son passage.
PHOTO : RADIO-CANADA


Je me suis inclinée devant la ténacité des coureurs à l’entraînement. J’ai observé le brouhaha des manifestants marchant en direction du parlement. Je vous ai épiés, coincés dans vos voitures à l’heure de pointe. J’ai même aidé quelques voyageurs à retrouver leur chemin vers le musée.

Plusieurs se sont interposés pour que je reste. Le gouvernement canadien en a décidé autrement : je serai remplacée au cours des dix prochaines années.

La durée moyenne d’un pont est généralement de 75 ans, rappelle Munzer Hassan.

Le professeur en génie apporte une mise en perspective qui saura, je l’espère, vous aider à accepter un peu mieux mon départ. D’être déjà, à l’époque, conçu, construit, [d’avoir] servi réellement plus que 120 ans, c’est un exploit en soi, conclut-il.

Merci à vous tous de m’avoir accompagnée pour un bout de chemin. C’est le moment de couper les ponts. Pour toujours, votre Alexandra.

https://ici.radio-canada.ca/recit-nu...Wq7WfC1nFl5NSg
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  #183  
Old Posted Dec 17, 2023, 5:34 PM
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Alexandra bridge right now

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  #184  
Old Posted Dec 17, 2023, 9:46 PM
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Alexandra bridge right now

Awesome. You can really appreciate the magnificence of the bridge from that perspective. The thought of that bridge not being there anymore breaks my heart.
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  #185  
Old Posted Dec 18, 2023, 12:27 AM
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Awesome. You can really appreciate the magnificence of the bridge from that perspective. The thought of that bridge not being there anymore breaks my heart.
I agree! I don’t get it when people say that it’s ugly.
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  #186  
Old Posted Jan 6, 2024, 5:06 PM
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https://ottawacitizen.com/feature/re...t-of-symbolism

Author of the article:Randy Boswell
Published Jan 06, 2024

The national capital’s most picturesque crossing of the Ottawa River isn’t scheduled to be dismantled, replaced and reopened until 2032. But members of the federal government team overseeing the planned demolition of the Alexandra Bridge and the erection of the structure that will take its place are likely going to need the full eight years just to meet their own ambitious goals for what the reborn landmark is expected to accomplish symbolically.

According to the comprehensive overview document guiding the expected $800-million project, the new bridge in the heart of Ottawa-Gatineau will have to bear not only the weight of thousands of trucks, cars and buses as they journey daily across the river, but also the heavy responsibility of commemorative and metaphorical obligations explicitly written into the 477-page blueprint prepared by Public Services and Procurement Canada and the National Capital Commission.

The new bridge, according to the PSPC-NCC integrated project team leading the monumental undertaking, will need to:

1. celebrate the engineering marvel that the original, 122-year-old structure represents;
2. advance the cause of Indigenous reconciliation;
3. include features to commemorate a dark moment in the LGBTQ2+ history of Canada;
4. pay homage to the designated heritage river running below, as well as:
5. the wildlife all around;
6. the shoreline archaeological heritage;
7. the original construction material (i.e. century-old piers and girders);
8. the breathtaking vista;
9. the relationship between Ontario and Quebec;
10. the principle of sustainability;
11. the multiple merits of “active transportation”;
12. and — why not? — the story of Canada itself.

As one of several summarizing statements puts it, the project managers have set themselves the task of “creating an emblematic bridge in the form of an exceptional civic site that reflects Canada’s national identity and values, while respecting the integrity of the cultural landscape of the capital.”


The new bridge, according to the PSPC-NCC integrated project team leading the monumental undertaking, will need to, among other things, maintain the breathtaking vista.
More specifically, the overview states that “the new design of the bridge will reflect the different histories that overlay the land, specifically that of Indigenous partners and minority groups, including members of the LGBTQ2+ communities.”

And then there’s this: “The new design that will replace the existing steel structure, must build on its legacy and important historical context through a state of-the-art, world-class architectural and structural bridge design that is both a statement of the present time and reflective of the past.”

The report even posits the possibility of “reuse of materials” from the original structure as a commemorative feature of the new bridge.

For now, it’s all just words in an overview report. An even more robust expression of these lofty goals awaits the completion of a dedicated heritage impact assessment currently being prepared for the project.

But there is a strong sense communicated in the framework document for the bridge that all such construction-of-meaning goals will be nearly as important as constructing the physical thing that gets vehicles, people, bicycles, wheelchairs, e-scooters and baby strollers from one side of the Kichi Zibi to the other.

At the moment, the historic span is closed to vehicular traffic but available to pedestrians, cyclists and other low-impact users. It might seem paradoxical, but the current closure is enabling repair and rehabilitation work that will keep the bridge in good working order just long enough to permit its safe and efficient deconstruction beginning in 2028.

As a recent press release stated, crews are now working to “stabilize the bridge structure so it can be taken apart safely as part of the replacement project.”

In short, they’re fixing it up to tear it down. Then, by 2032 if all stays to schedule, an “iconic” new crossing will be in place and ready to use.

But it won’t just be a new bridge between Ottawa and Gatineau. According to the plan, it’ll have to be a bridge brimming with connections to the past and the future.

“Building on and continuing the legacy of our national icons, the bridge will work both as foreground and a background, a sculpture and a setting to the experience of the nation’s capital,” the project description states, adding that key principles about preserving views, commemorating built heritage and history, and symbolizing important principles and ideas will “provide further guidance to the concepts that will be used in the development of the new bridge.”

To be clear, the project description also includes many references to the kinds of engineering challenges normally associated with maintaining, knocking down and building bridges — corrosion, cracks and cantilevers; trestles and trusses; plus (reassuringly for us non-experts) adherence to safe standards for “seismic performance” and “load carrying capacity.”

An interprovincial crossing that’s elegant and meaningful is important; but one that doesn’t suffer the same fate as the old, falling-down London Bridge of nursery rhyme infamy is also desirable, my fair lady.

The orderly “deconstruction and reconstruction” of the river-spanning conduit is rightly identified as the prime objective of the project, along with creating a massive piece of urban infrastructure that “serves as an integral transportation link, essential to the mobility planning in both Ottawa and Gatineau.”

But a signature bridge for a G7 capital can be more than that — much more. As the project’s official mission statement puts it, the dual aim is “to create a sustainable interprovincial transportation connection that will prioritize active mobility and highlight the symbolic importance of the site to all Canadians for many generations to come.”

David Jeanes, one of Ottawa’s most prominent heritage advocates, is also a sustainable-transportation proponent and a civil engineer by trade. It’d be a challenge to find anyone in the capital who could better articulate an appreciation of the twin challenges facing the bridge builders: to erect a sturdy structure to carry us across the water for the next few hundred years while investing it with the necessary artistry, imagination and sense of history.

Jeanes is a former president of Heritage Ottawa, which promotes the conservation and showcasing of heritage architecture in the city. He’s also on the PSPC-NCC’s public advisory group for the bridge project as a representative of Transport Action Canada, which advocates for sustainable and efficient public transit and improved infrastructure for individuals’ active transportation — cycling, walking and other healthy, carbon-free means of locomotion.

Both organizations are also part of the Alexandra Bridge Coalition, which has led the fight against the demolition of the original crossing.

If Jeanes and the rest of Ottawa’s heritage and environmental communities had their druthers, the existing bridge would be preserved and repurposed — not replaced. The ABC coalition has spent years unsuccessfully trying to convince PSPC and the NCC to keep the current bridge intact, but halt vehicular traffic and convert it to a crossing exclusively for active transportation and public transit — specifically an interprovincial tramway or light-rail line that would represent a fraction of the weight and structural stresses posed by endless streams of cars and trucks and buses.

“The concern on the heritage side,” Jeanes notes, is that much energy is being poured into figuring out how to commemorate the current bridge, “rather than considering the question of, you know, is the bridge worthy of preservation?”

And while Jeanes acknowledges that this battle appears to be lost, he argues that federal officials pushing ahead with the new bridge project have never seriously studied the light-use option favoured by opponents of Alexandra’s replacement. The Alexandra Bridge Coalition insists that because the existing bridge is so little used by cars and trucks (9 per cent of all cross-river vehicular traffic in the capital) and so extensively used by cyclists and pedestrians (about one-third of all cross-river traffic in the capital), the PSPC and NCC have ignored a better solution than replacement.

“That decision was made by them last fall,” Jeanes concedes. “We’re aware, from that point of view, that people would say the train has left the station. But the Alexandra Bridge Coalition and Heritage Ottawa still don’t feel that the alternative . . . has been adequately considered.

“PSPC is convinced that the bridge has to be rebuilt to Canadian highway bridge standards,” adds Jeanes. “And we feel that that’s the wrong criteria.”

If David Jeanes, former president of Heritage Ottawa, and the rest of Ottawa’s heritage and environmental communities had their druthers, the existing bridge would be preserved and repurposed — not replaced. PHOTO BY ERROL MCGIHON, /Postmedia
In 2021, PSPC’s chief engineer Pierre Lebrun accepted an invitation from Heritage Ottawa to give a public presentation outlining the federal department’s case for replacing — not refurbishing — the bridge.

“It wasn’t an easy decision for PSPC to move forward with the replacement of the bridge,” Lebrun told the audience at the time. “People within PSPC are as attached to the bridge as people outside of PSPC. However, we knew the bridge was at the end of its service life, the feasibility of maintaining it was questionable, and we needed to address the many risks associated with its condition.”

There will be other battles ahead, says Jeanes, and that includes holding the PSPC-NCC project team to its pledges to elegantly commemorate the original bridge and communicate a range of other ideas and values.

Fine words in the project overview will require reinforcement and elaboration in the forthcoming heritage impact assessment, Jeanes adds. “Would it be just some plasticized interpretive panels along the bridge or at the entrance to the bridge that would give that historical information? Those are great for a while, but they don’t necessarily last forever.”

One option being considered is to essentially replicate the design of the original structure as a tribute to its beauty and engineering achievements, albeit with modern materials and techniques to enhance the safety, maintenance and longevity of the replacement.

Even if the new bridge doesn’t approximately replicate the existing bridge, said Jeanes, there will be public pressure on the federal government to create something very special in that location rather than a strictly functional crossing that fails to live up to its billing as a new architectural icon for the capital.

“People are saying, if you build a utilitarian bridge there, you’re losing what we have today, which is a significant landmark in an important setting,” he said. The integrated project team’s highlighting of ambitious symbolic and commemorative goals is “absolutely” applauded by Heritage Ottawa, and Jeanes noted that “the reason those messages came out so strongly is that those were the messages from the public consultations, and from the work of the Alexandra Bridge Coalition.”

In 2020, an online survey about the impending bridge project conducted by the NCC and PSPC gathered nearly 3,000 responses from members of the public. When asked to identify the issue that most concerned them about the work ahead, the No. 1 answer (listed by 64 per cent of all respondents) was “loss of the unique character and heritage features of the Alexandra Bridge.”

In mid-November, PSPC and NCC officials provided a project update to Jeanes and other members of the public advisory group. They emphasized that the ongoing heritage impact assessment would “identify and articulate the heritage values and character-defining attributes” of the bridge replacement project, ensuring the integration of the new structure within “the broader cultural landscape.”

They also committed to “involve Algonquin design experts” and “seek traditional knowledge perspectives” in carrying out the project, and highlighted plans to prioritize “preservation of views and celebration of the bridge’s legacy.”

A Citizen feature story from 2014 appears to have helped inspire one of the probable commemorations — far from a celebratory one, but vital to preserving knowledge of a tragic and important episode in LGBTQ2+ history in Canada. The in-depth article by reporters Andrew Duffy and Marie-Danielle Smith, cited in the PSPC-NCC report and headlined “Death by Hate: The life, power and symbolism of Alain Brosseau,” vividly recalled the 1989 “gay-bashing” murder of a young man who was thrown to his death off the Alexandra Bridge by a homophobic killer.

In August 2009 at the Alexandra Bridge, then-Ottawa police chief Vern White and then-Gatineau police chief Mario Harel marched alongside hundreds of supporters to honour the life of Alain Brosseau.
In August 2009 at the Alexandra Bridge, then-Ottawa police chief Vern White and then-Gatineau police chief Mario Harel marched alongside hundreds of supporters to honour the life of Alain Brosseau. PHOTO BY CHRISTOPHER PIKE /Postmedia
“The (integrated project team) is sensitive to a noteworthy historical event which will be considered when engaging in stakeholder consultations with members of the LGBTQ2+ community,” the overview document states. “On August 21, 1989, a notable murder was committed on the bridge due to the murderer’s assumption that the victim was homosexual. This tragedy and its causes led to widespread shock in the city, mobilization of the LGBTQ2+ community (which had long been the target of violence in the area) and the introduction of unprecedented police reforms. In its wake, the Ottawa Police Service would pioneer diversity training and become the first in the country to establish a hate crimes unit.”

Offering another example of heritage that needs to be commemorated, Jeanes said a key aspect of the history of the existing bridge was its role as a link in Canada’s nation-building transcontinental railway system and related economic development.

“It was critically important in railway history. It was part of the transcontinental railway from Montreal to Vancouver, from 1902 until 1966,” said Jeanes. “Canada’s signature train, The Canadian, crossed that bridge in both directions every day, every one of those 64 years.”

In a 2020 online survey about the impending bridge project, when asked to identify the issue that most concerned them about the work ahead, the public said “loss of the unique character and heritage features of the Alexandra Bridge” was No. 1 for them. PHOTO BY TONY CALDWELL /Postmedia
But just as the railway network had its role in the creation of a sea-to-sea-sea Canada, it also facilitated the displacement and dispossession of Indigenous peoples across the country. That double-edged part of Canadian rail history was highlighted during the recent unveiling of the former Prince of Wales railway bridge west of downtown Ottawa as a repurposed, active-transportation crossing renamed the Chief William Commanda Bridge after the revered Ottawa-area Algonquin leader who died in 2011.

It’s perhaps noteworthy that only seven respondents to the 2020 online public survey conducted by the NCC and PSPC identified retaining the name “Alexandra Bridge” for a new crossing as a heritage-preservation priority. Erecting historical placards and other displays was the top answer (650 mentions out of nearly 3,000 respondents), reusing material from the original bridge in a new structure was No. 2 (441 mentions) and “restore rather than replace” the current bridge was No. 3 (219 mentions).

The survey results suggest (but hardly guarantee) there wouldn’t be great resistance to renaming the crossing — which honours Queen Alexandra, consort of King Edward VII, who ascended the throne after the death of Queen Victoria in the same year the original bridge was opened. (As it happens, the former Prince of Wales Bridge was named for the future Edward VII after it was built in 1880.)

Jeanes himself played a cameo part in the history of the Alexandra Bridge — though he doesn’t put it quite like that. In 2001, when the structure reached its 100th anniversary, the heritage advocate organized a commemorative event that attracted politicians and other dignitaries from both sides of the river. They gathered at the south-end viewing platform, heard speeches about the importance of the bridge in Ottawa and Canadian history, and watched an Outaouais transit bus — “with its destination sign reading ‘Interprovincial 100,’ ” Jeanes recalled — recreate the inaugural crossing of the Alexandra a century earlier.

“I’m passionate about this bridge,” he said. “I wasn’t thinking at that time of the bridge having a finite life.”

Last edited by Ottawacurious; Jan 6, 2024 at 8:18 PM.
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  #187  
Old Posted Jan 6, 2024, 8:20 PM
Ottawacurious Ottawacurious is offline
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Originally Posted by Harley613 View Post
Delete.

I have decided to go with 'no comment' on certain aspects of this project.
Yup.
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  #188  
Old Posted Jan 6, 2024, 8:51 PM
DTcrawler DTcrawler is offline
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"Build a nice looking bridge" would've sufficed. But gotta keep all the bureaucrats employed somehow.
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  #189  
Old Posted Jan 6, 2024, 10:14 PM
kwoldtimer kwoldtimer is offline
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"Build a nice looking bridge" would've sufficed. But gotta keep all the bureaucrats employed somehow.
Looking at that list of random things the bridge is supposed to do or symbolize, it seems to me that they've ensured that it will be a committee bridge rather than a single vision.

Personally, I'd like it to be a cable stayed bridge with big steel/stone neo-gothic towers.
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  #190  
Old Posted Jan 6, 2024, 11:03 PM
DTcrawler DTcrawler is offline
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Looking at that list of random things the bridge is supposed to do or symbolize, it seems to me that they've ensured that it will be a committee bridge rather than a single vision.

Personally, I'd like it to be a cable stayed bridge with big steel/stone neo-gothic towers.
Cable stayed would certainly be my top choice (tied-arch or suspension would be great too) but unfortunately I can't help but be pessimistic about whatever PSPC is going to come up with, them being PSPC after all.

Specifically "pay homage to the breathtaking vista" to me reads as "build something very bland and subtle to not disturb the surrounding views," à la Parliamentary view plane restrictions. Add on Ottawa's aversion to height and boldness and my hopes are further diminished.

If I had to guess, we end up with a basic concrete highway overpass-style bridge with plaques every dozen metres or so explaining the plights of various groups such as the Indigenous or LGBTQ populations. Of course, the plaques will quickly become faded, engraved with couples' initials, or graffitied, and voila, you'll have a truly iconic bridge fit for the heart of a G7 national capital city.
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  #191  
Old Posted Jan 7, 2024, 3:23 AM
kwoldtimer kwoldtimer is offline
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Cable stayed would certainly be my top choice (tied-arch or suspension would be great too) but unfortunately I can't help but be pessimistic about whatever PSPC is going to come up with, them being PSPC after all.

Specifically "pay homage to the breathtaking vista" to me reads as "build something very bland and subtle to not disturb the surrounding views," à la Parliamentary view plane restrictions. Add on Ottawa's aversion to height and boldness and my hopes are further diminished.

If I had to guess, we end up with a basic concrete highway overpass-style bridge with plaques every dozen metres or so explaining the plights of various groups such as the Indigenous or LGBTQ populations. Of course, the plaques will quickly become faded, engraved with couples' initials, or graffitied, and voila, you'll have a truly iconic bridge fit for the heart of a G7 national capital city.
A viewing platform as part of the pedestrian space would probably do it.
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  #192  
Old Posted Jan 7, 2024, 3:57 AM
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Originally Posted by Ottawacurious View Post
https://ottawacitizen.com/feature/re...t-of-symbolism




The new bridge, according to the PSPC-NCC integrated project team leading the monumental undertaking, will need to:

1. celebrate the engineering marvel that the original, 122-year-old structure represents;
2. advance the cause of Indigenous reconciliation;
3. include features to commemorate a dark moment in the LGBTQ2+ history of Canada;
4. pay homage to the designated heritage river running below, as well as:
5. the wildlife all around;
6. the shoreline archaeological heritage;
7. the original construction material (i.e. century-old piers and girders);
8. the breathtaking vista;
9. the relationship between Ontario and Quebec;
10. the principle of sustainability;
11. the multiple merits of “active transportation”;
12. and — why not? — the story of Canada itself.
Is this satire? Surely not? I wonder if the bureaucracy has run so amok a new government can't save us.
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  #193  
Old Posted Jan 7, 2024, 5:28 AM
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Looking at that list of random things the bridge is supposed to do or symbolize, it seems to me that they've ensured that it will be a committee bridge rather than a single vision.

Personally, I'd like it to be a cable stayed bridge with big steel/stone neo-gothic towers.
I think a steel arch bridge would nice too - it has towers we could make in any style, lots of metal like the current one. The Sydney Harbour Bridge is pretty nice:

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  #194  
Old Posted Jan 7, 2024, 6:00 AM
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Cable Stayed and Steel Arch won't happen because of Parliament, and in a city rife with ridiculous rules, I actually agree with it. Parliament Hill should be preserved as the dominant focus of the area. Those designs would make the bridge oversized. I would like to see something low slung and unique like the Sheikh Zayed Bridge in Abu Dhabi, but that would be far too aspirational for Ottawa, unfortunately.
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  #195  
Old Posted Jan 7, 2024, 8:38 AM
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Cable Stayed and Steel Arch won't happen because of Parliament, and in a city rife with ridiculous rules, I actually agree with it. Parliament Hill should be preserved as the dominant focus of the area. Those designs would make the bridge oversized. I would like to see something low slung and unique like the Sheikh Zayed Bridge in Abu Dhabi, but that would be far too aspirational for Ottawa, unfortunately.
Sydney Harbour Bridge is a similar distance away from the Sydney Opera House (~400-500m) as the Alexandra Bridge is from Parliament Hill. I would argue that in the Sydney example, neither site detracts from the other, despite both being significant and prominent landmarks. In Ottawa's case, despite the current Alexandra Bridge being quite prominent, I can't say it's ever distracted me from focusing on Parliament Hill / the Centre Block. Sure, if a cable-stayed or tied-arch bridge were built as a replacement, it might initially be considered a "distraction" due to its novelty, but I think over time it would simply serve as a complementary eye-catching piece to the national capital vista, along with Parliament Hill and other sites like the National Gallery.
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  #196  
Old Posted Jan 8, 2024, 2:50 PM
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Considering the geography and the requirements for 'low-profile' a concrete arch bridge wouldn't be too out of the question, and I wouldn't be mad about it.

I'm not even sure simple highway overpass style bridge would work, considering pier distance and the sheer depth at the base of the Ontario side cliff.

I project ONE large arch, originating at the base of the Ontario side shoreline, and then several highway overpass segments on the Quebec side, similar to what is there today, just concrete instead of steel. Zazzed up with some precast or some sh*t similar to the new random precast decor on the overpasses on the 417.

If we're lucky, we'll get something akin to Dom Luis bridge in Portugal, with pedestrian routes lower to the river's surface (keeping a height reserved for boat traffic, of course, but perhaps connecting River Trails without needing to climb hundreds of feet)






Last edited by rocketphish; Jan 8, 2024 at 5:50 PM. Reason: Resized the humongous image
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  #197  
Old Posted Jan 8, 2024, 10:20 PM
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According to the comprehensive overview document guiding the expected $800-million project, the new bridge in the heart of Ottawa-Gatineau will have to bear not only the weight of thousands of trucks, cars and buses as they journey daily across the river, but also the heavy responsibility of commemorative and metaphorical obligations explicitly written into the 477-page blueprint prepared by Public Services and Procurement Canada and the National Capital Commission.
How about "heavy weight of trams". Full stop. No cars or buses.

Quote:
1. celebrate the engineering marvel that the original, 122-year-old structure represents;
2. advance the cause of Indigenous reconciliation;
3. include features to commemorate a dark moment in the LGBTQ2+ history of Canada;
4. pay homage to the designated heritage river running below, as well as:
5. the wildlife all around;
6. the shoreline archaeological heritage;
7. the original construction material (i.e. century-old piers and girders);
8. the breathtaking vista;
9. the relationship between Ontario and Quebec;
10. the principle of sustainability;
11. the multiple merits of “active transportation”;
12. and — why not? — the story of Canada itself.
Unsurprisingly, this list doesn't include anything about the history of the bridge and its impact on the railways, transit, or anything else of significance beyond the engineering feat.
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  #198  
Old Posted Jan 8, 2024, 10:23 PM
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Des bateaux-taxis pour remplacer le pont Alexandra

Par Mathieu Bélanger, Le Droit
8 janvier 2024 à 04h00




C’est toute la mobilité du cœur de la capitale fédérale qui devra être repensée en prévision du chantier du remplacement du pont Alexandra prévu entre 2028 et 2032. Les répercussions à venir sur les habitudes de déplacement de milliers de travailleurs et consommateurs seront nombreuses. Êtes-vous prêts à prendre le bateau?

Tout au long de la semaine, Le Droit approfondira différents aspects de ce qui s’annonce comme une véritable greffe du coeur en plein centre de la capitale du Canada. Des enjeux, environnementaux, économiques, de mobilité et de mémoire collective seront entre autres abordés dans une série des textes portant sur le remplacement prévu du pont Alexandra.

Le rapport sur la Description détaillée du projet, dont nous avons obtenu copie, a été rédigé conformément à la loi fédérale sur l’évaluation d’impact et fait partie de la planification préliminaire du projet. Le document révèle déjà que les impacts sur la mobilité seront nombreux, coûteux, et que le casse-tête occasionné par le chantier sera différent qu’on soit automobiliste, utilisateur du transport en commun ou adepte du transport actif.

Différentes mesures sont déjà à l’étude par les fonctionnaires de l’Équipe de projet intégrée (EPI) qui planche déjà sur un système complet de contournement prévoyant un réseau de détours tant du côté d’Ottawa que de Gatineau. Des options de réinstallation temporaire ou permanente d’infrastructures importantes comme le quai, la rampe de mise à l’eau, la marina et les aires de stationnement du parc Jacques-Cartier sont à l’étude.

L’idée de taxis nautiques faisant la navette entre le Musée canadien de l’histoire, sur la rive québécoise, et les écluses du canal Rideau, à Ottawa, est sérieusement envisagée pour desservir les piétons et les cyclistes, les travailleurs et les touristes qui se déplacent d’une rive à l’autre.

Services publics et Approvisionnement Canada (SPAC) explore présentement diverses options comme un système de dégivrage sur la rivière des Outaouais pour allonger la saison des bateaux-taxis. L’utilisation d’une technologie permettant de maintenir le canal Rideau ouvert en hiver et aussi à l’étude, lit-on dans le rapport.



La possibilité de déplacer temporairement le tronçon cyclable qui traverse actuellement le pont Alexandra est en analyse. Le pont Cartier-Macdonald est envisagé pour accueillir ce lien de transport actif important. Cela permettrait de relier le sentier existant près de l’extrémité nord du parc Jacques-Cartier à la promenade Sussex, à Ottawa.

Un système de navettes pourrait aussi être mis en place sur le boulevard de la Confédération [rue Laurier �� Gatineau, le pont du Portage, et la rue Wellington à Ottawa] pour notamment desservir efficacement les employés fédéraux qui doivent régulièrement faire le trajet entre les édifices fédéraux de Hull et la Cité parlementaire, à Ottawa.

Ces navettes, qu’elles soient fluviales ou terrestres, ne seront toutefois pas suffisantes pour éponger le déficit de mobilité engendré par l’absence du pont le plus central de la grande région de la capitale fédérale. L’EPI prévoit une augmentation de la congestion sur les routes et les ponts. Les autres fermetures de ponts interprovinciaux qui pourraient survenir pendant les quatre années que comptera le chantier viendraient évidemment exacerber une congestion routière déjà devenue critique dans le cœur de la capitale.

L’EPI dit collaborer avec les villes de Gatineau et Ottawa, ainsi qu’OC Transpo et la Société de transport de l’Outaouais (STO) pour développer un «plan de gestion du trafic» en prévision du chantier du pont Alexandra. Les travaux, note le rapport, auront inévitablement des impacts sur les volumes de circulation et les temps de déplacement.

Parc transformé en chantier

La déconstruction d’un pont centenaire en acier et la construction par la suite, au même endroit, d’un nouveau lien appelé à devenir la nouvelle signature du cœur de la capitale fédéral ne se fait pas sur un mouchoir de poche. La logistique entourant les travaux et la gestion du chantier s’annonce complexe et forcera nécessairement le gouvernement fédéral à altérer temporairement certains espaces verts emblématiques de la capitale.

Le rapport sur la Description détaillée du projet donne un avant-goût de ce qui attend la rive québécoise pendant les quatre années que durera le projet. Des analyses restent à faire, mais il se pourrait bien qu’une bonne partie du parc Jacques-Cartier devienne l’arrière-cour du chantier.



Des structures d’amarrage pour charger et décharger les matériaux seront nécessaires. L’EPI précise que les zones immédiatement adjacentes au pont qui pourraient être touchées comprennent évidemment le parc Jacques-Cartier, mais aussi les terrains du Musée canadien de l’histoire, de l’usine Kruger, ainsi que, dans une moindre mesure la pointe Kìwekì [anciennement la pointe Nepean] et le parc Major’s Hill.

«L’aire de stationnement, la marina et le quai du parc Jacques-Cartier sont des sites très précieux pour l’assemblage de composantes plus grandes pour le pont, note l’EPI. Cela donnerait aux entrepreneurs un excellent accès pour les bateaux de service, de mise à l’eau et de stationnement, ainsi que pour recevoir la livraison des composantes du pont par barge.»

La proximité du parc Jacques-Cartier avec le pont en fait un excellent candidat pour devenir une «zone de rassemblement» qui accueillerait les services de soutien et les opérations nécessaires à la construction et la déconstruction du pont. Ainsi, on pourrait retrouver au parc Jacques-Cartier une centrale de béton, de l’entreposage de matériaux et de produits pétroliers, des contenants à outils et des aires de dépôts pour les matériaux de déconstruction.

L’endroit pourrait aussi servir de stationnement pour la machinerie lourde et les équipements requis comme des excavatrices, des rétrocaveuses, des bulldozers, des grues, des plateformes élévatrices, des pompes à béton, des installateurs de pieux et des génératrices. Les bureaux du personnel administratif et technique y seraient aussi installés.

«Ces installations de dépôt et de rassemblement seront démantelées à la fin du projet, après quoi les sites utilisés seront restaurés, note l’EPI. Cela peut comprendre le nettoyage, l’élimination des matériaux granulaires, l’emplacement du remblai, le nivellement et l’aménagement paysager.»

Étape par étape

Les ingénieurs de l’EPI évaluent présentement plusieurs scénarios de déconstruction du pont Alexandra. Ce dernier a été construit en séquences, il y a plus d’un siècle. Cela pourrait suggérer la même méthode, mais à l’inverse. La séquence des étapes pour la construction est pour sa part déjà précisée.

Les années 2028 et 2029 serviront à organiser le chantier, déplacer les services publics, construire le quai temporaire pour les barges, installer les batardeaux pour la rivière des Outaouais, forer le fond de la rivière et construire les nouveaux piliers en béton armé.

L’année 2030 doit être le théâtre de l’assemblage de la superstructure sur les piliers de béton et de la construction du tablier de circulation véhiculaire et du tablier de la promenade.

Les années 2030 et 2031 donneraient lieu au réaménagement de l’intersection du boulevard des Allumettières et de la rue Laurier si cela s’avère nécessaire, mais aussi à la construction de murs de soutènement aux approches de Gatineau et d’Ottawa. Les travaux de pavage, d’éclairage et de signalisation sont aussi au menu. Le pont doit être ouvert au public en 2032.

La dernière étape surviendra une fois le pont ouvert et se résume à la remise en état des habitats naturels et la restauration des sites adjacents au pont qui auront servi à l’organisation du chantier.
https://www.ledroit.com/actualites/a...A6WSZTKXAOA7Q/
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  #199  
Old Posted Jan 8, 2024, 11:03 PM
zzptichka zzptichka is offline
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Wonder if they looked into building a pontoon bridge. Although, it probably doesn't stand a chance against the ice in the spring.
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  #200  
Old Posted Jan 8, 2024, 11:10 PM
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I'm confused though, why are they talking already about detours and staging areas and not about the design competition?
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