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MDX SR 836 Modernization from NW 57th Avenue to NW 17th Avenue

MDX is making improvements to the most congested segment of SR 836, between NW 57th Avenue and NW 17th Avenue. One lane will be added in each direction to increase capacity and the interchanges will be improved to reduce congestion and backups onto local roads. The intersections at NW 57th Avenue and NW 27th Avenue will be completely reconstructed with an innovative traffic solution called Diverging Diamond Interchange or DDI for short to improve access to the surrounding areas for drivers entering and exiting the expressway. The left lane exits to Miami international Airport at NW 42nd Avenue will be eliminated and replaced with new right lane exits that will improve traffic flow. Lastly, MDX is reinforcing the inside shoulders of the expressway to allow Miami-Dade County express busses to drive on the shoulders when expressway speeds dip below 35 MPH.

MDX SR 836 Interchange Improvements at 87th Avenue

MDX has begun construction of the SR 836/Dolphin Expressway Interchange Improvements at NW 87th Avenue in the Doral/Fontainbleau area. The project will complete system-to-system connections between SR 836 and the Palmetto Expressway and provide increased capacity to meet future traffic needs along SR 836. The main purpose of the project is to improve traffic operations and safety of the SR 836 and NW 87th Avenue Interchange by reconstructing the entrance and exit ramps and widening NW 12th Street between NW 87th and NW 82nd Avenues. A significant improvement will be the addition of a new flyover entrance ramp that will provide a direct connection from westbound NW 12th Street to westbound SR 836. The new entrance ramp will substantially reduce congestion at the intersection of NW 87th Avenue and NW 12th Street. The project also includes the construction of sound barriers, signing and pavement markings, lighting, drainage, utility coordination, Intelligent Transportation System (ITS) infrastructure and landscaping.

SR 836 Improvements from 17th Avenue to the Midtown Interchange

MDX in partnership with the Florida Department of Transportation (FDOT) has completed the revaluation of a Project Development and Environment Study (PD&E) for improvements to SR 836/Dolphin Expressway from the 17th Avenue Interchange, to the SR 836/I-95/I-395 Interchange, for a distance of 1.5 miles. The MDX segment includes improvements to SR 836/Dolphin Expressway from NW 17th Avenue to the I-95 which will improve capacity and safety, and alleviate traffic congestion along the SR 836 corridor and interchanges. The FDOT segment includes the area from I-95 to I-395 incorporating a signature bridge over Biscayne Boulevard. Construction is estimated to have duration of five

MDX SR 874 Ramp Connection to SW 128 Street

MDX has commenced the design/build of a new access ramp connection from the southern terminus of SR 874/Don Shula Expressway to SW 128th Street, including widening from two to four lanes of SW 128th Street, from SW 122nd Avenue to SW 137th Avenue. The SR 874/Don Shula Ramp Expressway Ramp Connector will provide alternative expressway access to the area, reducing congestion on SW 120th Street and SW 152nd Street by providing additional connectivity and mobility to the rapidly growing area of West Kendall and Southwest Miami-Dade County. The construction is estimated to have duration of approximately three years.


Dolphin Station Park and Ride Transit Facility

MDX is designing and building the Dolphin Station Park and Ride Transit Terminal Facility in partnership with Miami-Dade County Department of Transportation and Public Works (DTPW) and the Florida Department of Transportation (FDOT), District Six. The transit facility will support Miami-Dade County’s SR 836/Dolphin Expressway Express Bus Service, provide a terminus or stop for several local bus routes serving the Dolphin Mall and the cities of Sweetwater and Doral, as well as serving a potential future east-west commuter rail service on the CSX line. Miami-Dade County asked MDX to fast track the planning, design and construction of the Dolphin Station. FDOT will fund 100% of the planning and design development, and share the construction cost with MDT. Miami-Dade District 12 Commissioner Jose “Pepe” Diaz has been instrumental in advancing this effort. Once construction is completed the facility will be operated and maintained by DTPW.