CTRMA opens public review for proposed MoPac South express lanes

March 26, 2026

The Central Texas Regional Mobility Authority has moved a plan to add one to two express lanes on MoPac into a public review phase. The proposed stretch runs from Cesar Chavez Street on the north end to Slaughter Lane on the south, covering a key north-south route through Austin.

CTRMA prepared the proposal and is inviting public scrutiny before advancing the project. Opening the plan for review allows residents, businesses and local officials to see details of the lane options and raise questions or concerns that the agency can address during planning.

The express lane idea would introduce new managed lanes along the MoPac corridor, an arterial highway that carries heavy commuter traffic. Changes on this segment could affect travel times and lane configurations for drivers who use MoPac daily.

Public review typically gathers input on design, access points and local impacts, and it guides next steps such as environmental studies or final design work. Stakeholders will be able to examine the proposed alternatives and provide comments that CTRMA will consider as it refines the project.

Officials have not released a final decision on the number of lanes, timing or construction schedule, the proposal instead outlines one and two-lane options for further study. Those choices will shape later engineering work and any required permits or approvals from regional and local authorities.

As the proposal advances through the review process, CTRMA will coordinate with partner agencies and the community to identify potential impacts and mitigation measures. The public phase marks a formal step in moving the MoPac South concept from planning toward possible implementation.

Residents who travel MoPac regularly will likely see ongoing outreach from the mobility authority as the project develops. Community feedback during this review period will play a role in how the corridor proposal evolves in the months ahead.