Historic Bridges
of the United States
Boston Bridge
Allegheny County
,
Pennsylvania
Overview
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Terraserver USA
Facts
Overview
Through truss bridge over Youghiogheny River on Walnut Street
Location
Allegheny County
,
Pennsylvania
Status
Open to traffic
History
Built 1931; rehabilitated 1989
Design
Warren through truss
Dimensions
Length of largest span: 420.0 ft.
Total length: 1,182.1 ft.
Deck width: 29.5 ft.
Vertical clearance above deck: 21.7 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+40.30833, -79.82500
(decimal degrees)
40°18'30" N, 79°49'30" W
(degrees°minutes'seconds")
Approximate UTM coordinates
17/599846/4462642
(zone/easting/northing)
USGS topographic map
McKeesport
Inventory numbers
PA 02 0048 0130 0203
(Pennsylvania bridge number)
BH 30220
(Bridgehunter.com ID)
Inspection
(as of 12/2007)
Deck condition rating:
Poor
(4 out of 9)
Superstructure condition rating:
Poor
(4 out of 9)
Substructure condition rating:
Fair
(5 out of 9)
Appraisal:
Structurally deficient
Sufficiency rating: 31.3
(out of 100)
Average daily traffic
(as of 2008)
20,059
Categories
Allegheny County, Pennsylvania
(121)
Built 1931
(434)
Built during 1930s
(6,120)
NR-eligible
(2,624)
Open
(22,298)
Pennsylvania
(1,716)
Skewed
(3,684)
Span length 250-500 feet
(599)
Structurally deficient
(12,078)
Through truss
(5,561)
Total length 1000-2500 feet
(732)
Truss
(16,278)
Warren through truss
(146)
Warren truss
(916)
Youghiogheny River
(5)
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Comments
Boston Bridge
Posted July 17, 2008, by kayandjay.net
(kayandjay [dot] net)
Is this really a Warren Truss?