Bridgehunter.com | Riverside Drive Manhattan Valley Viaduct

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Riverside Drive Manhattan Valley Viaduct

Looking south under the viaduct in October, 2007

Overview: Steel arch viaduct carrying Riverside Drive over 125th-134th Streets (Manhattan Valley)
Location: New York City, New York County, New York
Status: Open to traffic
History: Built 1900; rehabilitated 1961 and 1988
Builder: - F. Stuart Williamson
Design: 26 steel arch spans carry Riverside Drive over Manhattan Valley, a natural fault line valley.
Dimensions: Length of largest span: 128.9 ft.
Total length: 1,808.8 ft.
Deck width: 59.7 ft.
Also called: Riverside Drive Viaduct
Riverside Drive Bridge
Approximate latitude, longitude: +40.81861, -73.95972 (decimal degrees)
40°49'07" N, 73°57'35" W (degrees°minutes'seconds")
Approximate UTM coordinates: 18/587729/4519142 (zone/easting/northing)
USGS topographic map: Central Park
Inventory numbers: NY 2246660 (New York State bridge identification number)
BH 26439 (Bridgehunter.com ID)
Inspection (as of 07/2011): Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 80.9 (out of 100)
Average daily traffic (as of 2002): 12,408

Michael Minn
The Manhattan Valley Viaduct - 1897 NY Times article on debate surrounding the construction of the viaduct
Wikipedia