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Let's move forward, together.

The Miami-Dade Expressway Authority (MDX) provides safe, affordable choices for the movement of people and goods in Miami-Dade County. The MDX system supports and sustains economic opportunities in the South Florida region. It is equitably tolled, well maintained, reliable, multimodal and aesthetically pleasing, while also being environmentally sensitive.


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Get answers to questions about MDX, SunPass, Toll-by-Plate, Toll Enforcement and rented vehicles.



I just wanted to send a brief email thanking you guys for your help. I had a tire blowout on 836 East at 6am 5/4/14. You guys made a timely response and Alain Hernandez was the first to respond. He was very helpful, courteous and professional the whole time. He directed traffic and got me towed to a safe area to change a tire. Once there he insisted on doing all the work and I was back on the road in a matter of minutes. It’s hard to find good service or good people these days. Alain was a breath of fresh air! Thank you so much!

Lewis C. 5/4/2014