Not development related (although, maybe in an abstract historic way it is)... but here is a new visualization for anyone who wants it.
PHILLY'S GRID IS A WEB: and other fun oddities.
interactive map (satellite view to see clearly)
This is a visualization I have been wanting to do for a while to see what it would look like if all 90 (yes 90!
) numbered streets were made into continuous line segments. (I didnt add lettered streets since that doesn't add anything of interest.)
There are 5 clearly distinct sections of the grid (different colors to help see this), and as the grid expands west it begins inflecting on historic roadways to form more of a web shape. This would be even more pronounced to they decided to call 64th - 80th Avenue where called "Streets", because this would imply those street where designed to eventually circle all the way from the Schuylkill, through W.Philly, then N.Philly past Broad Street heading east in some cases.
There are also lots of little oddities like where supposedly parallel, numbered streets, intersect - Or how several streets disappear into Delaware Co. then reemerge by City Ave. Or the one that most people are familiar with, e.g counting the streets along Market as you walk from U.City to C.C. (31, 30, 23?!?). So I wondered, where would those missing streets go, and how would it look if they were all there
Check it out, enjoy