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.
Length of largest span: 745.0 ft.
Total length: 1,432.0 ft.
Deck width: 183.0 ft.
Bunker Hill Bridge
Approximate latitude, longitude
+42.36875, -71.06319(decimal degrees) 42°22'07" N, 71°03'47" W (degrees°minutes'seconds")
MA B16600 (Massachusetts bridge number)
BH 39928 (Bridgehunter.com ID)
Inspection report (as of October 2017)
Overall condition: Fair
Superstructure condition rating: Satisfactory(6 out of 9)
Substructure condition rating: Satisfactory(6 out of 9)
Deck condition rating: Satisfactory(6 out of 9)
Sufficiency rating: 79 (out of 100) View more at BridgeReports.com
June 4, 2020: New photo from Patrick Gurwell
November 14, 2017: New photos from Christopher Finigan