Bridgehunter.com | Leonard P. Zakim Bunker Hill Memorial Bridge

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From the north bank

Photo taken by Nathan Morton in Aug. 09

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Overview: Cable-stayed bridge over Charles River on I-93/US-1 in Boston
Location: Boston, Suffolk County, Massachusetts, and Middlesex County, Massachusetts
Status: Open to traffic
History: Built 2003
Builders: - Christian Menn
- FIGG Engineering Group of Tallahassee, Florida
- Howard, Needles, Tammen & Bergendoff of Kansas City, Kansas
- Miguel Rosales of Guatemala
- Parsons Brinckerhoff
- Ruchu Hsu
- Theodore Zoli
- W. Denney Pate
Design: The Leonard P. Zakim Bunker Hill Memorial Bridge was the widest cable-stayed bridge in world at 183 ft (55.7m) when it opened in 2003 as part of the "Big Dig" project. It serves as the northern entrance and exit to the city of Boston and terminates at the entrance to the Thomas P. "Tip" O'Neill Jr. Tunnel. The two towers are built to represent the Bunker Hill Monument that stands close-by in Charlestown. It provides a total of 8 lanes of north-south traffic plus an additional 2 lanes of an access ramp that is attached via a cantilever connection.
Dimensions: Length of largest span: 745.0 ft.
Total length: 1,432.0 ft.
Deck width: 183.0 ft.
Also called: Zakim Bridge
Bunker Hill Bridge
Approximate latitude, longitude: +42.36875, -71.06319 (decimal degrees)
42°22'07" N, 71°03'47" W (degrees°minutes'seconds")
Approximate UTM coordinates: 19/330117/4692781 (zone/easting/northing)
USGS topographic map: Boston South
Inventory numbers: MA B16600 (Massachusetts bridge number)
BH 39928 (Bridgehunter.com ID)
Inspection (as of 10/2011): Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Sufficiency rating: 79.0 (out of 100)
Average daily traffic (as of 2010): 155,200

Leonard P. Zakim Bunker Hill Memorial Bridge

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