Selmon Extension


The Selmon Extension is a planned 1.6-mile toll lane located in the median of Gandy Boulevard, which will allow a choice for local residents and regional travelers: use Gandy Boulevard for local destinations or use the Selmon Extension for a direct connection to the Selmon Expressway or the Gandy Bridge.


Provides a more efficient and safer dedicated hurricane evacuation route for almost 1.3 million local and regional families.


 Reduced Intersection traffic signal wait times (at Westshore Boulevard, Manhattan Boulevard, Lois Avenue and Dale Mabry Highway) equals reduced congestion and delays for local residents and shoppers.


Allows for continued vehicle access and visibility to businesses on both sides of Gandy. Completes a critical link in a road network that connects businesses, freight, and people throughout Tampa Bay.

Artistic Rendering – Selmon Extension Daytime

The Selmon Extension will provide a safer, smarter and connected choice for both local residents and regional travelers.
Tampa Hillborough Expressway Authority


Who We Are

Get to know us!

THEA Loves Tampa Bay and We Want You to #LoveYourDrive

THEA Logo TransparentAs an independent agency of the state, THEA owns, maintains, and operates four facilities within Hillsborough County: the Selmon Expressway, the Brandon Parkway, Meridian Avenue, and the Selmon Greenway. The Selmon Expressway is an all-electronic toll roadway, and revenues are used to improve and maintain THEA’s assets.

THEA constructed the Selmon Greenway, a 1.7-mile multi-use trail that runs east-west under the Selmon Expressway through downtown Tampa and connects with the City’s Riverwalk and the Meridian Trail. The Greenway is open for anyone who wants to enjoy fresh air, healthy exercise and the amenities of downtown Tampa.

THEA has led the charge in state-of-the-art transportation options on a local and national level. The international award-winning Reversible Express Lanes (REL) were the first-ever reversible express lanes using all-electronic tolling in the world. Transportation experts from around the country and the world have visited Tampa to learn more about the REL.

Building upon innovation, THEA has leveraged its award-winning infrastructure capabilities as a designated test bed for Connected Vehicle Technology. In September of 2015, the United States Department of Transportation (USDOT) awarded a $17 million federal contract to THEA. This award will be used, in partnership with other local agencies and private sector stakeholders, to conduct an innovative “Connected Vehicle Pilot Program” designed to make transportation safer, smarter and greener. The REL is designated as an Automated Vehicle test bed by the USDOT and is the only course to  provide real-time traffic testing and closed-course testing on the same roadway.


Our mission is to provide safe, reliable, and financially-sustainable transportation services to the Tampa Bay region while reinvesting customer-based revenues back into the community.


Our Vision

Our vision is to lead, partner, and implement safe, economically sound, and innovative multi-modal transportation solutions for our Tampa Bay community.


Promises Made, Promises Kept

Our Commitment to Tampa Bay

THEA is known for creating beautiful and innovative transportation solutions. Our international award winning Reversible Express Lanes (REL) were the first-ever reversible express lanes using all-electronic tolling in the world. Transportation experts from around country and the world, including China, Singapore, Spain and Canada, have visited Tampa to learn more about our lanes.

Our Reversible Express Lanes (REL) are a unique facility. The Selmon Expressway is the first road in Florida to address urban congestion by combining the innovations of concrete segmental bridges, reversible express lanes, and all electronic tolling. Like many urban areas, purchasing the additional land needed along this corridor for typical highway widening was neither physically nor financially feasible. To minimize the footprint of the Selmon Expressway, most of the project was constructed as a concrete segmental bridge using only 6 feet of space within the existing median.THEA is exploring using this same building technique for the Selmon Extension.

The REL provides a direct connection between Brandon and downtown Tampa, allowing for express travel of people in cars and buses. It is an innovative project that has won approximately two dozen awards of recognition by local, state, national and international organizations.

THEA also owns Meridian Avenue and Brandon Parkway. These serve as feeder roads to the REL, while at the same time, providing a beautifully landscaped pedestrian path, thus accommodating all modes of transportation.

Working in partnership with Neighborhood Associations, we’ve also worked to help improve underpasses in adjacent neighborhoods, including Swann Avenue and Mac Dill Avenue.

Artist Rendering – REL

Current View – REL

Artist Rendering – Meridian Avenue

meridian rendering1

Current View – Meridian Avenue


   Photo of Meridian Avenue circa 1999

Meridian Ave circa 1999

Current View – Meridian Avenue

Artist Rendering – Brandon Parkway

Current View – Brandon Parkway

Brandon 2008 copy copy



Frequently Asked Questions

Selmon Extension Frequently Asked Questions

Q: What is the Selmon Extension?

A: The Selmon Extension is a 1.6-mile toll lane, located in the median of Gandy Boulevard, which will allow a choice for local residents and regional travelers: use Gandy Boulevard for local destinations or use the Selmon Extension for a direct connection (Eastbound) to the Selmon Expressway or Dale Mabry or (Westbound) to the Gandy Bridge.

In order to maintain current access and visibility to businesses, the Selmon Extension will be innovatively designed to limit its size while maximizing visibility. We anticipate that the toll lane will be at least 30 feet high – that’s approximately twice as high than a typical urban bridge. The sleek design is intended to take the Extension out of a driver’s line of sight – allowing the driver to see businesses and turn lanes from both sides of Gandy Boulevard.

By removing the “pass-through” traffic coming to and from the Gandy Bridge that has no destination in the Gandy corridor, the Selmon Extension will create at least 35% greater capacity on Gandy Boulevard for neighborhood traffic and customers of Gandy Boulevard corridor businesses.

Q: What are the benefits of the Selmon Extension?

A: The Selmon Extension will provide safer, smarter and connected transportation solutions for both local and regional travelers:

The Extension provides a safe, dedicated and reliable hurricane and emergency evacuation route for Gandy area and regional residents, as well as helping to reduce accidents from red-light running and distracted driving.

The Selmon Extension gives travelers a choice to either stay on Gandy Boulevard for local destinations or use the Selmon Extension for regional “pass-through” trips. This results in reduced travel times, fuel consumption, and carbon emissions.

The Extension provides critical connectivity to the region for travelers and commerce between Hillsborough and Pinellas Counties. It allows buses, commercial, and emergency vehicles that are not stopping on Gandy Boulevard, seamless regional connectivity. The Selmon Extension will complete the link between the Selmon Expressway and the under-construction overpasses in Pinellas County that will link I-275 and the Gandy Bridge– providing connectivity from Brandon to the Beaches and Back.

Q: What are the next steps for the Selmon Extension?

A: THEA is updating the 2010 Project Development & Environmental (PD&E) study to reflect present-day Gandy corridor conditions. The PD&E update should be completed Summer 2016.

As part of THEA’s commitment to our community, we will work with the neighborhood residents and businesses, elected leaders, and other stakeholders to provide project updates and ongoing communications.

Q: Must all regional travelers now pay a toll to commute between Hillsborough and Pinellas Counties via Gandy?

A: No, regional travelers, indeed any traveler who does not want to pay a toll will simply stay on Gandy Boulevard. That’s one of the benefits of this project – providing commuters and regional travelers with a travel choice.

Q: How will the Selmon Extension affect businesses along Gandy Boulevard?

A: Construction is always difficult for motorists and businesses. THEA will work with the Gandy Boulevard businesses to identify issues and concerns – and then to address those concerns in our construction methods.

THEA will provide continuous project updates that include general project status and construction alerts.

THEA is also working with the Center for Urban Transportation Research (CUTR) at the University of South Florida to conduct an economic impact of the Selmon Extension. That study should be available Summer 2016.

When completed, the Selmon Extension will give travelers a choice, stay on Gandy Boulevard or take the 1.6-mile toll lane to connect directly to the Selmon Expressway.

Q: Has THEA explored other options to promote regional connectivity besides the Selmon Extension?

A: Yes. As recently as 2009, a Project Advisory Group (PAG), comprising Gandy-area community and elected leaders, reviewed several options to alleviate traffic congestion on Gandy Boulevard. These options included a tunnel under Gandy Boulevard, a bypass south of Gandy Boulevard and the Selmon Extension. The tunnel and bypass options were rejected by the PAG due to prohibitive costs and excessive disruption to existing businesses and residences along the Gandy corridor. The Selmon Extension was, and is still, considered the best option to offer safer and smarter regional connectivity while alleviating traffic congestion on Gandy Boulevard and creating greater capacity and access for neighborhood businesses and residents.

The Selmon Extension  SAFER.

We Care and Want To Hear From You.


Click Here to Download – Rendering of the Selmon Extension 


Download the Selmon/Gandy Interchange Exhibit

Selmon/Gandy Interchange Example

Selmon/Gandy Interchange Exhibit


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