The Mobility Authority uses private sector contractors with specialized expertise to provide staffing support for individual projects.

The Mobility Authority was created and operates under the Texas Transportation Code Chapter 370 and is authorized under state law to implement a wide range of transportation systems including roadways, airports, seaports and transit services.

[3] The road serves the fast-growing suburban communities of Cedar Park, Leander and Liberty Hill.

[4] In 2010, the Mobility Authority began a project to extend the tolled lanes of 183A 5-miles (8.0 km) from FM 1431/Whitestone Boulevard to near San Gabriel Parkway in Leander.

The US $127 million project known as Phase 3, was developed in partnership with the Texas Department of Transportation, which funded the flyover ramp between the eastbound 290 toll road and southbound SH 130.

[10] MoPac Express LanesIn October 2013, the Mobility Authority began construction off the US $204 million MoPac Improvement Project, an 11-mile (17.7 km) express lane project with Congestion pricing between Cesar Chavez Street in downtown Austin and FM 734/Parmer Lane in North Austin.

The project involved expanding State Loop 1/MoPac Boulevard by adding one tolled lane in each direction along the median of the highway.

[13] The Mobility Authority opened the 8-mile 183 South Toll Road in east Austin in phases between August 2019 and February 2021.

The project involves constructing two tolled lanes in each direction in the median of existing US 183 at a cost of $277 million.

A shared-use path will be constructed for cyclists and pedestrians from Hero Way to the planned Seward Junction Loop.

The Mobility Authority is making annual payments to a Regional Infrastructure Fund that will eventually total US$230 million over 25 years.