Leonard P. Zakim Bunker Hill Memorial Bridge

Zakim Bunker Hill Bridge
The bridge, seen in 2011
Coordinates	42°22′08″N 71°03′48″W / 42.36889°N 71.06333°W / 42.36889; -71.06333
Carries	10 lanes of I-93 / US 1
Crosses	Charles River, MBTA Orange Line
Locale	Boston, Massachusetts (North End–Charlestown)
Official name	Leonard P. Zakim Bunker Hill Memorial Bridge
Owner	Commonwealth of Massachusetts
Maintained by	Massachusetts Department of Transportation
Characteristics
Design	Cable-stayed bridge
Material	Steel, prestressed concrete[1]
Total length	1,432 ft (436 m)
Width	183 ft (56 m)
Height	270 ft (82 m)[1]
Longest span	745 ft (227 m)
Clearance below	40 ft (12 m)
History
Construction cost	$105 million
Opened	March 30, 2003 (northbound) December 20, 2003 (southbound)
Location

The Leonard P. Zakim (/ˈzeɪkəm/) Bunker Hill Memorial Bridge (also known as "The Zakim") is a cable-stayed bridge completed in 2003 across the Charles River in Boston, Massachusetts. It is a replacement for the Charlestown High Bridge, an older truss bridge constructed in the 1950s.

The bridge and connecting tunnel were built as part of the Big Dig, the largest highway construction project in the United States. The bridge's unique styling quickly became an icon for Boston, often featured in the backdrop of national news channels, to establish location, and included on tourist souvenirs. The bridge is commonly referred to as the "Zakim Bridge" or "Bunker Hill Bridge" by residents of nearby Charlestown.

The Leverett Circle Connector Bridge was constructed in conjunction with the Zakim Bridge, allowing some traffic to bypass it.