Leonard P. Zakim Bunker Hill Memorial Bridge

General Information

Other name(s):	Charles River Crossing; Charles River Bridge
Beginning of works:	1997
Completion:	20 December 2003
Status:	in use

Structure:	Cable-stayed bridge with semi-fan system
Function / usage:	Motorway bridge / freeway bridge
Material:	main span: Steel-concrete composite bridge side spans of main bridge: Prestressed concrete bridge

Location:	Boston, Suffolk County, Massachusetts, USA
Crosses:	Charles River
Part of:	Central Artery/Tunnel Project
Next to:	Charlestown Bridge (1900)
Replaces:	Old I-93 Charles River Bridge
Connects to:	Thomas P. O'Neill Jr. Tunnel (2003)
Coordinates:	42° 22' 7.38" N 71° 3' 47.56" W

Show coordinates on a map

cost of construction

ca. United States dollar 115 000 000

cables	steel
pylons	reinforced concrete
pylon heads	composite steel-reinforced concrete
main span	composite steel-reinforced concrete
side spans of main bridge	prestressed concrete

20 December 2003	Open to traffic in both directions of the mainline (4 lanes in each direction).
2005	Expected completion and opening of another 2 lanes for a local cantilever ramp.

Owner

Client

Design concept

Design

Architecture

Engineers of Record

Construction engineers

Co-contractor

Project management

Wells, Matthew (2002): 30 Bridges. Laurence King, pp. 122-126.
Wells, Matthew / Pearman, Hugh: 30 Brücken. Callwey Verlag, Munich (Germany), pp. 122-126.
Davidson, William A. / McCabe, Raymond J. / Soydemir, Çetin (1998): Below Boston's New Bridge. In: Civil Engineering Magazine, v. 68, n. 12 (December 1998), pp. 34-37.
Vizard, Frank: The Big Dig. In: Popular Science, n. 6, v. 258 (2001).
Dupré, Judith (2017): Bridges. A History of the World's Most Spectacular Spans. 2^nd edition, Black Dog & Leventhal, New York (USA), ISBN 978-0316507943, pp. 134-135.