ROAD AND BRIDGES - BRIDGES OF THE ISLES OF LAS OLAS

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Owner: 
Florida Department of Transportation - District 4 - Broward Operations
Design team: 
Gannett Fleming
Delivery method: 
Design/Build
Location: 
E. Las Olas Blvd and Sunrise Key Blvd., Ft. Lauderdale, FL

The project will replace five existing bridges in the City of Fort Lauderdale. These bridges, which were constructed between 1946 and 1959, have been evaluated and found to be structurally deficient requiring complete replacement. All five bridges will be fixed, low level bridges. The four Nurmi Isle bridges will have (2) 10’ lanes and 6’ sidewalks and the Sunrise Key bridge will have (2) 11’ lanes (minimum) and 7’ sidewalks. Each bridge replacement will be accomplished in two construction phases. Phase I pre-construction involves the set-up of MOT devices for the work zone, temporary signage and signals and the relocation of the existing utilities on the closed side. In the first phase, one half of the bridge will be closed for demolition and new construction, while the other half remains open as a bidirectional ingress/egress lane from the isles to the mainline. The closed half of the bridge will be constructed with precast bridge segments to ensure higher quality, efficiency of construction and easier maintenance for the Owner after completion. Upon completion of the new bridge side, the MOT will be switched to Phase II to allow traffic onto the newly constructed lane as a bidirectional travel lane, while the existing side is closed as mentioned above for demolition and construction. Other scopes included in the bridge reconstruction include the preservation and reuse of the historic bridge urns and pedestals, low level decorative bridge lighting, a vertical face traffic barrier and below bridge deck curtain walls to conceal the view of intermediate bends