Storrow Drive is an award-winning single-cell box girder. The unique bridge, including a 380-ft main span and 225-ft back spans carrying a Storrow Drive bridge is an award-winning, signature, single-cell steel box girder bridge carrying 4-lanes of traffic over the Charles River in Boston, MA. Due to its proximity to the Zakim Bunker Hill signature cable-stayed bridge, the design objectives were to create a bridge form that did not compete for attention with the adjacent cable-stayed bridge, from either the roadway level or from afar, and yet have esthetically pleasing elegant lines when viewed from the surrounding park area. The unique 830-ft long bridge, carrying a 76-ft wide roadway, is the largest of its kind in North America. The composite single-cell box girder superstructure has a span of 380-ft-main span over the navigational channel, with two 225-ft-long symmetric back spans. The parabolic-profiled superstructure depth varies from 18 ft at the main piers down to 8 ft at the end piers. Sena Kumarasena, Ph.D., PE was responsible for developing the preliminary design consistent with the overarching design objectives while ensuring and verifying the feasibility of fabrication, delivery, erection, and the cost competitiveness of the design. He also served as the technical director during the final design of the steel-composite alternate which was selected for construction following competitive bidding against a concrete segmental alternative. Sena also served as the Project Manager and the Technical Lead for construction-phase engineering services.
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