Img: Manhattan Bridge Columns
February 19th, 2007
Manhattan Bridge:
- Type of bridge: Suspension
- Construction started: October 1, 1901
- Opened to traffic: December 31, 1909
- Length of main span: 1,470 feet
- Length of side spans: 725 feet
- Length, anchorage to anchorage: 2,920 feet
- Total length of bridge and approaches: 6,855 feet
- Number of decks: 2 decks
- Number of traffic lanes: 7 lanes (4 upper, 3 lower)
- Number of subway tracks: 4 tracks
- Height of towers above mean high water: 322 feet
- Clearance at center above mean high water: 135 feet
- Number of cables: 4 cables
- Diameter of each of four cables: 21¼ inches
- Length of each of four cables: 3,224 feet
- Structural material: Nickel steel
- Tower material: Nickel steel
- Deck material: Nickel steel
- Cost of original structure: $31,000,000
(Info courtesy of nycroads.com. Photos by DumboNYC)
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