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

MDX started the construction of the improvements to the most congested segment of SR 836 from NW 57th Avenue to NW 27th Avenue. One lane will be added in each direction to increase capacity and the interchanges at NW 27th Avenue, NW 37th Avenue, NW 42nd Avenue, NW 45th Avenue and NW 57th Avenue will be improved to reduce congestion and backups onto local roads. An innovative traffic solution called Diverging Diamond Interchange (DDI) is being used to significantly improve traffic efficiency. Left lane exits to Miami international Airport will be eliminated and reconstructed as right lane exits.

MDX SR 836 Interchange Improvements at 87th Avenue

MDX has commenced 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. The scope includes the partial reconstruction of SR 836 and NW 87th Avenue Interchange including replacement of all SR 836 bridges over NW 87th Avenue and widening of NW 12th Street. A significant improvement will be the addition of a new flyover ramp that will provide direct connection from westbound NW 12th Street to westbound SR 836. This substantially reduces the 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 the 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 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 years.

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 2 to 4 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 152 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 in partnership with Miami-Dade Transit (MDT) and the Florida Department of Transportation (FDOT) has completed a Project Environmental Impact Report (PEIR) to evaluate a park-and-ride/terminal facility on approximately 15 acres of publicly owned land north of NW 12th Street, just west of the Florida’s Turnpike (HEFT). The transit facility will support MDT’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 has 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. The facility will be operated and maintained by MDT.