From North of Johnson Street to Griffin Road
American was selected to conduct this PD&E study and design to evaluate the alternatives for widening approximately 3.7 miles of the Florida’s Turnpike from six to eight lanes. These improvements provide for the milling, resurfacing, and widening of the Turnpike, geometric revisions to the Griffin Road Interchange, replacement of the Sheridan Street overpass bridge, revisions to signing and pavement markings, lighting, retaining walls, noise walls, and drainage design. Extensive utility coordination was required in areas of new bridge construction, drainage, and retaining wall placement in areas involving several high pressure gas transmission lines. Permits were obtained from the South Florida Water Management District. A State Environmental Impact Report (SEIR) was prepared and approved by the Turnpike.
Previous work included evaluation of implementing a 10-lane typical section including potential impacts to Florida Gas Transmission’s (FGT) existing 24-inch and 18-inch gas lines and presenting the findings to the Turnpike and FGT. We also evaluated the additional impacts associated with a constrained right of way width of 200 feet and providing a 10-lane typical section. Current work includes widening to include auxiliary lanes to accommodate a 8-lane typical section. Construction elements include milling, resurfacing, and widening of the Turnpike, revisions to signing and pavement markings, lighting, retaining walls, bridges, noise walls, and drainage design. Continued extensive utility coordination is required, especially with FGT.