Historic Bridges
of the United States
Mcardle Viaduct
Allegheny County
,
Pennsylvania
Overview
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TopoZone
Terraserver USA
Facts
Overview
Through truss bridge over the Norfolk Southern Railroad on Mcardle Roadway in Pittsburgh
Location
Pittsburgh
,
Allegheny County
,
Pennsylvania
Status
Open to traffic
History
Built 1933; rehabilitated 1960
Design
Parker through truss
Dimensions
Length of largest span: 214.9 ft.
Total length: 547.9 ft.
Deck width: 26.9 ft.
Vertical clearance above deck: 15.0 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+40.42167, -79.99167
(decimal degrees)
40°25'18" N, 79°59'30" W
(degrees°minutes'seconds")
Inventory numbers
PA 02 7301 0000 3064
(Pennsylvania bridge number)
BH 30272
(Bridgehunter.com ID)
Inspection
(as of 07/2006)
Deck condition rating:
Serious
(3 out of 9)
Superstructure condition rating:
Fair
(5 out of 9)
Substructure condition rating:
Critical
(2 out of 9)
Appraisal:
Structurally deficient
Sufficiency rating: 20.3
(out of 100)
Average daily traffic
(as of 2005)
1,000
Categories
Allegheny County, Pennsylvania
(121)
Built 1933
(328)
Built during 1930s
(5,134)
NR-eligible
(2,568)
Open
(21,589)
Owned by city
(1,882)
Parker truss
(412)
Pennsylvania
(1,696)
Pittsburgh, Pennsylvania
(48)
Span length 175-250 feet
(990)
Structurally deficient
(10,795)
Through truss
(5,218)
Total length 500-1000 feet
(996)
Truss
(15,752)
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