On August 28, 2024, the Central Texas Regional Mobility Authority announced the completion of the Barton Skyway Ramp Relief Project, a series of improvements on southbound MoPac at the entry and exit ramps between Bee Cave Road and Loop 360. The $10 million project added pavement for auxiliary and merge lanes to alleviate congestion, and to improve travel times.
“Completion of the Barton Skyway Ramp Relief Project represents a critical first step in addressing congestion along southbound MoPac”, said the Mobility Authority Director, James Bass. “It also underscores the commitment by the Mobility Authority to re-invest back into the Central Texas region by delivering equitable and accessible transportation solutions that benefit all.”
The bottleneck created by traffic merging onto southbound MoPac at the Barton Skyway and Bee Caves Road entrance ramps has contributed to traffic congestion, particularly at the Loop 360 southbound exit. Prior to construction, travel times between 35th Street and Loop 360 soared to 38 minutes, ranking a stretch of MoPac including this section among the Texas A&M Transportation Institute’s (TTI) list of Texas’ 100 Most Congested Road Sections (2023).
The Mobility Authority began developing the improvements in 2019, which include a new southbound auxiliary lane from Barton Skyway to Loop 360, a new acceleration lane for the southbound Barton Skyway entrance ramp, three dedicated through-traffic lanes under Loop 360, and a dedicated left lane exit ramp to southbound Loop 360.
