NYPL's Public Domain Archive. Not developed or endorsed by NYPL. Part of the World's largest public domain source PICRYL.com.

sidewalls

public
1 media by topicpage 1 of 1
Two column bent viaduct; traveler for erecting forms, central park tunnel - (in this tunnel ducts are built in the sidewalls).

Two column bent viaduct; traveler for erecting forms, central park tun...

Picryl description: Public domain image of a bridge, train viaduct, free to use, no copyright restrictions.