Patroon Island Bridge

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**Patroon Island Bridge**

Carries	6 lanes Interstate 90
Crosses	Hudson River
Locale	Albany, New York and Rensselaer County, New York
Maintained by	New York State Department of Transportation
ID number	1092839
Design	Deck Truss
Longest span	375 ft
Total length	1,795 ft
Width	89 ft
Clearance below	60 ft
AADT	70,787
Opening date	1968
Coordinates	42°40′54″N, 73°43′45″W

The Patroon Island Bridge is part of a major highway interchange in Albany, New York. The bridge carries Interstate 90, in the east-west direction, over the Hudson River between Albany and Rensselaer County, New York. It has been in service since 1968; however, some structural repairs were made in 1992. The bridge consists of ten spans. Seven spans are considered the main spans and consist of steel trusses and concrete decks. The other three spans are considered approach spans, which are supported by plate girders. The main span over the river-shipping channel is 375 feet long and 89 feet wide, and the overall bridge length is 1,795 feet. There is an estimated 60 feet of clearance for shipping on the Hudson River below, which changes with the local tide. Today's replacement cost is estimated at $80 - 100 million. The bridge has an HS Inventory load rating of 35 tons, and is inspected annually. The average daily traffic count was 70,787 in 1998 with a 4.5% estimated traffic growth during the life of the bridge.

The bridge's name comes from the former (Lower) Patroon Island that once existed adjacent to the bridge. (This maps shows location of the former Lower Patroon Island and the bridge. A Patroon was a proprietor of a tract of land in the 17th century Dutch colony of New Netherland in North America.)

Bridge Location: Latitude: 42.665019 Longitude: -73.728843

[edit] External links

Patroon Island Bridge at Capital Highways

Patroon Island Bridge. View shows various structural supports

Patroon Island Bridge, multilane interstate highway bridge carries I-90 over the Hudson River, Albany, New York (Menands Bridge barely visible upstream)