in this 1949 overlay map showing the route of the freeway system through downtown, the broadway tunnel still exists, (
barely.....but it is there), you can see the full length of the tunnel.
Source:
LAPL
(
and why they couldn't spend the crummy $49,000.00 to move the old school building a measly 100 feet or so, is still something i can't understand.........grrrrrrrrrrrrrrrr)