I-75 EXPRESS LANES SEGMENTS A&B | WGI

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I-75 EXPRESS LANES SEGMENTS A&B

Miami-Dade and Broward Counties, FL

A complex part of the implementation of express lanes in a network of limited-access facilities, WGI’s innovative design and collaboration drove the addition of numerous enhancements to the project, significantly improving the overall system-to-system operation, reducing environmental impacts, improving safety, enhancing construction efficiencies, and reducing overall construction costs. This project consisted of adding express lanes within the I-75 median; reconstruction, widening, and milling and resurfacing of the I-75 mainline; and other interchange ramp connections, including major improvements to the Miami Gardens Drive interchange. The project also required widening and milling and resurfacing of the adjacent Homestead Extension of Florida’s Turnpike (HEFT) mainline to accommodate the express lane connection with I-75. By creating a more efficient interchange configuration, and reducing wetland impacts by more than six acres, $200,000 of mitigation credits were recaptured. The design eliminated the need for a future planned divided arterial roadway, saving $10 million, and returned two acres of TIFF lands to the Miami-Dade County School Board for a future school site, in addition to extensive noise mitigation to communities along the project’s length. This approximately 27-mile stretch of I-75 is one of the first corridors in Florida to benefit from the implementation of express lanes.