George Westinghouse Bridge, spanning Turtle Creek at Lincoln Highway (U.S. Route 30), East Pittsburgh, Allegheny County, Pennsylvania, USA. 1929-1932 Initial Construction. Joseph Elliott, photographer, , summer 1997. This image is in the public domain because it is a product of the United States government: National Register of Historic Places NRIS Number: 77001120. Historic American Engineering Record (Library of Congress). Survey number: HAER PA-446. See:
https://www.loc.gov/pictures/item/pa3564/
Date
Source
Daderot
Author
Historic American Engineering Record (HAER), creator