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Bicentennial Bascule Bridge Rehabilitation

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The original Bicentennial (I-94BL) Bridge was built in 1976. The existing main span is a hydro-mechanically driven 135-foot Scherzer double-leaf rolling bascule and the four approach spans consist of steel multi-girder and steel girder-floorbeam-stringer cross sections. The total bridge length is 570-feet. The existing bridge is 60 ft. from curb to curb and carries four lanes of vehicular traffic with 5 ft. sidewalks on each side.

The M&M-led rehabilitation of this St. Joseph River Bascule Bridge (and the M-63 Blossomland Bridge) consisted of mechanical, electrical, and structural rehabilitation design. The design team developed detailed contract documents including design drawings and project specific special provisions to address the detailed requirements for rehabilitation. Maintenance and protection of traffic was of critical importance throughout the duration of this project and was successfully accomplished through careful design planning and execution by the entire project team. The detailed narrative description of services rendered by M&M for Detailed Design and Construction Supervision includes movable bridge inspection; Preliminary & Final Design, and; Services During Construction.

The bridge was opened to traffic in 2018 and is currently in service.

Bridge Geometry
Length of Main Span 135 feet
Total Project Length 570 ft
Lanes on Structure 4 lanes, 2 pedestrian sidewalks