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

This project replaced five existing bridges in the City of Fort Lauderdale. These bridges, which were constructed between 1946 and 1959, were evaluated and found to be structurally deficient requiring complete replacement. All five bridges were fixed, low level bridges. The four Nurmi Isle bridges have now (2) 10’ lanes and 6’ sidewalks and the Sunrise Key bridge have now (2) 11’ lanes (minimum) and 7’ sidewalks. Each bridge replacement was accomplished in two construction phases. Phase I pre-construction involved 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 was closed for demolition and new construction, while the other half remained open as a bidirectional ingress/egress lane from the isles to the mainline. The closed half of the bridge was constructed with precast bridge segments to ensure higher quality, efficiency of construction and easier maintenance for the Owner after completion. When the new bridge side was completed, the MOT was switched to Phase II to allow traffic onto the newly constructed lane as a bidirectional travel lane, while the existing side was 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