BRIDGES AND
TUNNELS OF
ALLEGHENY
COUNTY,
PENNSYLVANIA
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Bessemer and Lake Erie RR over Allegheny River 1918
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BESSEMER & LAKE ERIE RAILROAD, ALLEGHENY RIVER BRIDGE
HAER No. PA-508
Pennsylvania Historic Railroad Bridges Recording Project
Spanning Allegheny River, east of Pennsylvania Turnpike (I-76)
Oakmont vic.
Allegheny County
Pennsylvania
PHOTOGRAPHS
XEROGRAPHIC COPIES OF COLOR TRANSPARENCIES
WRITTEN HISTORICAL AND DESCRIPTIVE DATA
HISTORIC AMERICAN ENGINEERING RECORD
National Park Service
1849 C Street, NW
Washington, DC 20240
HISTORIC AMERICAN ENGINEERING RECORD
INDEX TO PHOTOGRAPHS
BESSEMER & LAKE ERIE RAILROAD, ALLEGHENY RIVER BRIDGE
HAER No. PA-508
Pennsylvania Historic Railroad Bridges Recording Project
Spanning Allegheny River, east of Pennsylvania Turnpike (I-76)
Oakmont vic.
Allegheny County
Pennsylvania
Jet Lowe, photographer, spring 1999.
PA-508- 1 OVERVIEW OF BRIDGE, LOOKING WEST FROM SOUTH BANK OF ALLEGHENY RIVER AT LOCK AND DAM No. 3.
PA-508-2 3/4 VIEW, LOOKING SW FROM NORTH BANK, SHOWING SPANS OVER BACK CHANNEL, WITH PENNSYLVANIA TURNPIKE IN BACKGROUND.
PA-508-3 PERSPECTIVE VIEW OF SIMPLE TRUSS SPAN AT NORTH END, LOOKING NW.
PA-508-4 PERSPECTIVE VIEW OF CANTILEVER TRUSS OVER BACK CHANNEL, LOOKING SW.
PA-508-5 OBLIQUE VIEW OF CANTILEVER TRUSS OVER MAIN CHANNEL, LOOKING NNE FROM SOUTH ABUTMENT. PENNSYLVANIA TURNPIKE BRIDGE AT LEFT.
PA-508-6 OBLIQUE VIEW OF CANTILEVER TRUSS OVER MAIN CHANNEL, LOOKING NNE FROM SOUTH ABUTMENT.
PA-508-7 DETAIL VIEW INSIDE CANTILEVER TRUSS OVER MAIN CHANNEL, SHOWING LOWER CHORD AND LATERAL BRACING. NOTE WEBBING BETWEEN DIAGONAL EYE-BARS AT RIGHT. PENNSYLVANIA
TURNPIKE BRIDGE IN BACKGROUND.
PA-508-8 DETAIL VIEW INSIDE CANTILEVER TRUSS OVER MAIN CHANNEL, LOOKING SSW TOWARD SOUTH ABUTMENT.
PA-508-9 DETAIL VIEW OF LOWER-CHORD CONNECTION NEAR SOUTH ABUTMENT, WITH LATERAL, DIAGONAL, AND VERTICAL MEMBERS.
BESSEMER & LAKE ERIE RAILROAD, ALLEGHENY RIVER BRIDGE
HAER No. PA-508
INDEX TO PHOTOGRAPHS
(Page 2)
INDEX TO COLOR TRANSPARENCIES
All color xerographic copies were made from a duplicate color transparency. Jet Lowe, photographer, spring 1999.
PA-508-10 (CT) OBLIQUE VIEW OF CANTILEVER TRUSS OVER MAIN CHANNEL, LOOKING NNE FROM SOUTH ABUTMENT.
PA-508-11 (CT) OBLIQUE VIEW OF CANTILEVER TRUSS OVER MAIN CHANNEL, LOOKING NNE FROM SOUTH ABUTMENT. PENNSYLVANIA TURNPIKE BRIDGE AT LEFT.
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Introduction --
Nearby Structures
Last modified on
10-Feb-2004
HAER Text: Justin M. Spivey, April 2000; Pennsylvania Historic Railroad Bridges Recording Project
Design format: copyright 1997-2002 Bruce S. Cridlebaugh
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