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MoPac Express Lane


Those looking to bypass traffic congestion have a choice to use the MoPac Express Lane. Drivers who prefer not to pay a toll can use the non-tolled lanes on MoPac.

The MoPac Express Lane will give drivers the option to bypass congestion on the 11-mile stretch of MoPac between Parmer Lane and Cesar Chavez Street and get to their destination without delay. MoPac is one of Austin's most important arteries, serving as a key route to downtown and points beyond. As a primary alternative to Interstate 35, MoPac carries more than 180,000 cars and trucks each day. By 2030, MoPac is projected to serve more than 320,000 cars a day. Phase I (north of 2222 to Parmer) is currently open to traffic.

Express Lanes are special buffer-separated lanes that use variable tolls to keep traffic moving even when the adjacent lanes are congested. This is accomplished by raising the toll when traffic is heavy and lowering the toll when traffic is light. The lanes provide a non-tolled, congestion-free route for public transit buses and registered vanpools, but also allow individual drivers to pay to use the lane capacity that remains. The Express Lane will be located in the middle of the MoPac corridor, separated from the existing lanes by a four- to five-foot-wide striped buffer zone with flexible plastic sticks. Drivers will be able to access the MoPac Express Lanes at Cesar Chavez Street, at Far West Boulevard and Anderson Lane, or at Parmer Lane.

Fact Sheet: Want more information fast? Click here for a fact sheet on the MoPac Express Lane.


The MoPac Express Lane is completely automated with no need to stop or even slow down at toll booths. The choice is yours – utilize the all-electronic, or cashless, tolling method of payment through a tag account; or if you don’t have a tag just keep moving, and we’ll bill you through the Pay By Mail program.

In Texas, there are multiple transportation agencies that are authorized to operate toll roads, issue their own toll tag, and do their own billing. In the Austin area, there are two: the Texas Department of Transportation (TxDOT/TxTag) and the Central Texas Regional Mobility Authority (Mobility Authority).


Customers can pay their tolls with a TxTAG, TollTag, or EZ TAG and get a 25% discount, or they can choose to Pay By Mail. Pay By Mail customers are billed using a picture of their license plate, and are charged a $1.15 statement fee per bill. Vehicle registration information must be up to date in order for the bill to be sent to the correct address. Pay By Mail is available on all toll roads in Central Texas, although you may receive separate bills depending on which agency operated the road you traveled on.

To learn about paying your tolls, click here.


The toll during off peak times has been running about 25 cents and about 53 cents during peak hour travel times.





The Traffic Management Center (TMC) is the heart of the Mobility Authority's intelligent transportation system. The TMC affords us the ability to monitor our facilities as well as coordinate resources for incident management and maintenance, enabling efficient responses to accidents and other interruptions to traffic flow.

In the final configuration, 17 high-definition cameras will line the MoPac corridor with vehicle detectors set about ½ mile apart. These devices will monitor every stretch of MoPac Expressway between Cesar Chavez and Parmer Lane with technicians monitoring live video feeds out of the TMC. Operators and an algorithm will monitor traffic levels in the Express Lane so that the variable-priced toll rates can be adjusted as needed to maximize the number of vehicles that can be carried in the Express Lanes at target speed of 45 mph for a reliable, free-flowing trip.

Electronic Message Boards Display Toll Price

The toll rate will be posted on electronic message boards and visible to drivers as they approach the entrance to the Express Lane so they can decide whether or not their trip is worth that amount. If the price increases while a driver is already in the lane, they will still pay the price that was posted when they initially entered.

72 Hour Delay:

To ensure accurate charges, the payment processing for MoPac toll transactions will be delayed so that the trips can be billed accurately. Any necessary price adjustments will be made during this 72-hour delay period to ensure that drivers are not overcharged when they receive their bill. In addition, cameras will capture photos of the Express Lane pricing signs with time and date stamps at every transaction.


  • Mobility Authority
  • Mobility Authority
  • Mobility Authority
  • Mobility Authority


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