The original Strauss Trunnion Bascule Bridge crossing the Inner Harbor-Navigation Canal at Florida Avenue provided a 91 ft. opening for marine traffic. Under the provisions of the "Truman-Hobbs Act" of 1940, funding was provided to replace the bridge with a new vertical lift bridge providing a 300-foot marine opening. The replacement bridge is at a low level grade carrying one railroad track and two-roadway lanes plus two sidewalks. The lift span is 352 feet long and has a maximum lift clearance of 156 feet.

Modjeski and Masters, Inc. performed the following engineering services:

Phase I: Feasibility Study and Conceptual Estimate
Design criteria, state-of-the-art details, evaluation of alternative design solutions and cost data were developed during this phase. The results are tabulated in a Conceptual Feasibility Report.

Phase II: Refinement of the Feasibility Study
This phase is essentially a refinement of Phase I. Preliminary plans were refined, formal control and topography surveys, soundings and geotechnical exploration were undertaken. Design Criteria and cost data was refined.

Phase III: Final Design, Contract Drawings and Specifications
Detailed designs on the contract plans with clearly written specifications were developed during this phase.

Phase IV: Services During Construction
Office support for checking shop drawings and responding to contractor inquiries. Field oversight of construction activities including daily diary, reports, pay estimates, quality assurance, change orders, and as-built plan preparation.