Bridges and Tunnels of Allegheny County and Pittsburgh, PA

allegorical carving from Allegheny County Office Building; 1929-31; Stanley L. Roush, architect

BRIDGES AND
TUNNELS OF
ALLEGHENY
COUNTY,
PENNSYLVANIA
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Home > All By Location regional map > Pittsburgh East > Panhandle Tunnel

Photo by Bob Rathke, 2/11/68, PA canal tunnel (left) and Panhandle RR tunnel during construction of U.S. Steel Building [USX Tower]

Panhandle Tunnel - Main information page
Panhandle Tunnel - Historic American Engineering Record documentation
Steel Plaza Subway Station

Photos from Library of Congress, Historic American Engineering Record (4/82):
South keystone portal and flanking retaining walls, view north;
Detail view of south keystone portal, view north;
Former south portal of the 79.4' tunnel extension;
Truncated tunnel at midtown subway site, view south

Photos from Library of Congress, Historic American Engineering Record (4/82):
General view of south tunnel from truncated wall;
West side of flanking retaining wall;
Safety bay located 207' from south portal;
Detail of west side of flanking retaining wall, showing tooling and deterioration of cut stone

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Introduction -- Nearby Structures