Leonard P. Zakim Bunker Hill Memorial Bridge
Boston span boasts plenty of function behind its graceful form
As final design consultant and engineer of record for the Leonard P. Zakim Bunker Hill Memorial Bridge, HNTB was responsible for plans, specifications and estimates, as well as the demolition of the structure that previously stood in its place.
The three-span bridge features a 745-foot main span. At 185 feet, it is the world’s widest cable-stayed bridge and the first asymmetrical cable-stayed bridge in the United States as two northbound lanes are cantilevered outside the east cable plane. The bridge also is the first major hybrid cable-stayed bridge in the United States, using steel in the main span and concrete in the back span.