SR-836 WB to HEFT SB (Miami-Dade, FL)
The Miami-Dade Expressway Authority contract required the complete design and construction of the re-aligned westbound SR 836 “Dolphin Expressway” from a point west of SW 97th Avenue to the southbound Homestead Extension of Florida Turnpike (HEFT). The project consisted of four vehicular bridges, roadway drainage, earthwork, asphaltic concrete roadway, six MSE retaining walls, retention ponds, roadway lighting, custom overhead sign structures, tree relocations. Bridges 11 & 12 were comprised of steel box beams with integral post-tensioned concrete caps on spread footings. Bridge 16 which spans NW 107th Avenue consisted of Florida U-Beams, caps, columns and spread footings. Bridge 10 was a widening of the existing HEFT Ramp over NW Flagler Street consisting of AASHTO beams, cap, columns and footings with 18" pile foundations. Temporary components to the project included support of embankments with sheet piles and soil anchors, excavation supports and traffic detours. Of note is that this project developed the first MDX concrete sign structure wing and the Palm Frond Liner used on the MSE walls and columns. Bridge 11 (over NB & SB HEFT) earned an award from the 2007 AISC Steel Bridge Competition.
Award: AISC Steel Bridge Competition 2007 - Merit Award
Delivery Method: Design Build
Completion Date: 28-Feb-05