Historic Bridges
of the United States
McClay's West Twin Bridge
Franklin County
,
Pennsylvania
Overview
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Map
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TopoZone
Terraserver USA
Facts
Overview
Stone arch bridge over Conodoguinet Creek on PA 4018
Location
Franklin County
,
Pennsylvania
Status
Open to traffic
History
Built 1827 by Silas Harry
Design
Stone arch
Dimensions
Length of largest span: 30.8 ft.
Total length: 102.0 ft.
Deck width: 16.4 ft.
Recognition
Posted to the National Register of Historic Places
Approximate latitude, longitude
+40.09694, -77.57028
(decimal degrees)
40°05'49" N, 77°34'13" W
(degrees°minutes'seconds")
Approximate UTM coordinates
18/280899/4441683
(zone/easting/northing)
USGS topographic map
Shippensburg
Inventory numbers
PA 28 4018 0070 0000
(Pennsylvania bridge number)
NRHP 88000779
(National Register of Historic Places reference number)
BH 30943
(Bridgehunter.com ID)
Inspection
(as of 06/2007)
Superstructure condition rating:
Poor
(4 out of 9)
Substructure condition rating:
Poor
(4 out of 9)
Appraisal:
Structurally deficient
Sufficiency rating: 46.9
(out of 100)
Average daily traffic
(as of 2008)
790
Categories
19th Century
(2,018)
Arch
(7,666)
Built 1827
(5)
Built during 1820s
(33)
Deck arch
(6,750)
Flared
(421)
Franklin County, Pennsylvania
(18)
NR-listed
(1,538)
Open
(21,983)
Owned by state
(6,721)
Pennsylvania
(1,714)
Span length 25-50 feet
(6,209)
Stone arch
(1,376)
Structurally deficient
(12,028)
Total length 100-125 feet
(2,487)
Comments
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