We recommend booking Leonard P. Zakim Bunker Hill Bridge tours ahead of time to secure your spot. The Bunker Hill Steps, cascading from Hope Street down to Fifth Street, are a thoughtful attempt to remedy the situation. See all 9 Leonard P. Zakim Bunker Hill Bridge tours on Tripadvisor Leonard P. Zakim Bunker Hill Memorial Bridge is a motorway bridge / freeway bridge, cable-stayed bridge with semi-fan system, prestressed concrete bridge and steel-concrete composite bridge that was built from 1997 until 2003. It is the widest cable-stayed bridge in the world and the first "hybrid" cable-stayed bridge in the United States, using both steel and concrete in its frame. With its graceful lines and 270-foot towers, the Leonard P. Zakim Bunker Hill Bridge fuses Boston's future with its historic past. The Bridge serves as the northern entrance to and exit from Boston. Designed by landscape architect Lawrence Halprin and completed in 1990, this massive concrete staircase provides a pedestrian route from Bunker Hill to the Los Angeles Central Library. The project is located in Boston, Suffolk County, Massachusetts, USA. The Leonard P. Zakim Bunker Hill Memorial Bridge, part of The Big Dig Project in Boston, is one of the widest cable-stayed bridges in the world. We would like to show you a description here but the site won’t allow us. If you book with Tripadvisor, you can cancel up to 24 hours before your tour starts for a full refund.