Miami-Dade Expressway Authority

What Miami-Dade Expressway Authority does

Miami-Dade Expressway Authority, operating under the brand Greater Miami Expressway Agency (GMX), is a Florida state-chartered, user-funded transportation authority established to manage toll expressways across Miami-Dade and Monroe Counties. The agency operates core corridors including the Dolphin Expressway (SR-836) and the Gratigny Parkway (SR-924), along with the I-95/I-395 interchange, which connect Miami International Airport, PortMiami, downtown Miami, and surrounding South Florida business districts. Its core services include toll collection via integration with the statewide SunPass electronic toll collection network, real-time traffic advisories, the Road Rangers roadside assistance program, and the recently completed Wrong Way Safety improvement program. GMX also operates a procurement program that engages local construction, engineering, and consulting vendors for project delivery and ongoing maintenance.

The agency's business model is transaction-based: revenue is generated entirely from per-trip toll fees charged to drivers using its expressways, with billing cadence on a pay-as-you-go basis via SunPass and cashless toll collection. There is no tiered subscription pricing; toll rates vary by vehicle class and expressway segment but are not publicly disclosed in the source material. The customer base is a mass-market, geographically concentrated set of commuters, regional drivers, tourists, and goods transporters using South Florida expressways — there are no enterprise accounts or B2B contracts. GMX is governed by a public Board with transparency provided through published laws, bylaws, board meeting videos, and an investor-relations function that issues financial reports consistent with a bond-issuing public entity. Capital expansion is planned through the Five-Year Work Program, which prioritizes safety, system preservation, mobility improvements, congestion relief, and transportation technology.

Name

Miami-Dade Expressway Authority

Legal name

Greater Miami Expressway Agency

Website

https://mdxway.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

11–50 employees

Short description

User-funded Florida state toll expressway authority managing the Dolphin Expressway (SR-836), Gratigny Parkway (SR-924), and related corridors across Miami-Dade and Monroe Counties. Operates SunPass toll collection, traffic advisories, roadside assistance, and safety programs for South Florida commuters and regional drivers.

Ownership category

akta.pro rank

Product category

Toll Road Operations

SIC

Transportation Services (4700)

akta.pro primary industry

Traffic Management & Intelligent Transportation Systems (Signals, TMCs, Congestion) (BPAIALAC)

akta.pro secondary industries

Toll Payment & Toll Account Management (ETC, Toll Tags, Toll Invoicing) (TLABAMAC), Electronic Toll Collection (ETC) & Transponder/Tag Systems (RFID/DSRC) (TLAJABAA), Speed Enforcement Systems (Fixed/Mobile Speed Cameras, Average Speed/Section Control) (TLAJAGAG)

Keywords

• Toll expressway operations
• Transportation infrastructure
• Electronic toll collection
• Highway safety programs
• Roadside assistance services

Headquarters

HQ city

Miami

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Infrastructure, Operations, Personnel, Technology or R&D, Others

Revenue model

1. Toll Revenue Collection: Revenue generated from toll collection on expressways including the Dolphin Expressway (SR-836), Gratigny Parkway (SR-924), and other managed lanes. Uses SunPass electronic toll collection and cashless payment systems.

Pricing tiers

Distribution channels4 records

Marketing channels8 records

Core offering

Greater Miami Expressway Agency (GMX) operates and manages a network of toll expressways in Miami-Dade and Monroe Counties, including the Dolphin Expressway (SR-836) and Gratigny Parkway (SR-924). The agency collects tolls electronically via SunPass, provides real-time traffic advisories, runs the Road Rangers roadside assistance program, and implements safety improvements such as wrong-way crash detection systems.

Product overview

Greater Miami Expressway Agency (GMX) operates as a transportation infrastructure management agency overseeing a network of expressways in Miami-Dade and Monroe Counties. The agency offers a unified portfolio of services centered on expressway operations, including the Dolphin Expressway (SR-836) corridor improvements, traffic management through real-time advisories, Road Rangers roadside assistance, toll inquiry services, and Wrong Way Safety initiatives. The Five-Year Work Program guides strategic priorities across safety, system preservation, mobility improvements, and transportation technology. The agency also maintains a Procurement Services program for vendor collaboration on construction and engineering projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Dolphin Expressway/I-95/I-395 Interchange

Quantifiable outcome

• Wrong-way crash safety improvements completed

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators1 record

Recent moves4 records

Expansion highlights3 records

Broad incumbents

• Transurban: Large publicly-listed toll-road operator with networks in the U.S. (e.g., I-95 Express Lanes, I-495/I-395), Australia, and Canada. Comparable as a toll infrastructure operator using electronic/congestion-priced tolling; contrasts with GMX as a public agency rather than a private concessionaire.
• Metropolitan Transportation Authority (MTA): Large public transportation authority serving the New York City region, operating tolling (bridges/tunnels) and transit services. Comparable as a major U.S. public-sector transportation authority with toll revenue and customer-service operations, though broader in scope (transit + tolling).

Direct peers

• Bay Area Toll Authority: Regional toll authority administering tolls on state-owned bridges in the San Francisco Bay Area. Comparable regional U.S. toll authority operating critical transportation infrastructure with electronic toll collection (FasTrak).
• Oklahoma Turnpike Authority: State-chartered authority operating the state's turnpike system with PikePass electronic toll collection. Comparable regional toll authority with similar scope (network of limited-access tolled highways) and government-entity governance.
• Harris County Toll Road Authority: County-level toll road authority operating tollways in the Houston metropolitan area. Comparable regional toll authority managing multiple tolled facilities with electronic toll collection (EZ TAG) in a large Texas metro.
• Florida's Turnpike Enterprise: State-owned toll road system operated within the Florida Department of Transportation, running hundreds of miles of limited-access toll facilities across the state. Direct peer operating within the same Florida toll ecosystem and SunPass network as GMX.
• North Texas Tollway Authority: Regional toll authority operating toll roads in the Dallas-Fort Worth metroplex, including the Dallas North Tollway and President George Bush Turnpike. Comparable U.S. toll-road authority using electronic toll collection (TollTag) and serving a major metropolitan market.
• Illinois State Toll Highway Authority: Operator of the Illinois Tollway system serving the Chicago metropolitan area. Comparable U.S. toll-road authority using I-PASS electronic toll collection with similar focus on system preservation, safety, and capacity expansion.
• E-470 Public Highway Authority: Public toll highway authority operating a 47-mile beltway around the Denver metropolitan area in Colorado. Comparable mid-sized regional toll authority with electronic toll collection (ExpressToll) and similar governance structure.
• Central Florida Expressway Authority: Florida-based toll expressway authority operating a network of toll roads in the Orlando metro. Like GMX, it is a state-chartered agency using SunPass/E-PASS electronic toll collection and managing a regional network of limited-access expressways.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/MDXway
• YouTubeyoutube.com/channel/UC1H9bOOE-FJBBGsUtAoZAAA
• Facebookfacebook.com/GMXAgency
• LinkedInlinkedin.com/company/miami-dade-expressway-authority
• Instagraminstagram.com/GMXAgency

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Miami-Dade Expressway Authority