04 Mopac South Presentation — original pdf

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City of Austin Urban Transportation Commission Briefing December 2, 2025 MoPac South • Limits: Cesar Chavez Street to Slaughter Lane • Length: Approximately 8 miles • Project Status: Environmental Study • Recent Activity: – Open House #6: Nov. 2024 – Jan. 2025 • Current Activity: – Draft Environmental Assessment preparation – Public Hearing planning 2 Public Input is Shaping the Project Shared values: – Minimize and avoid impacts to the human and natural environment – No increased elevations over Lady Bird Lake – No direct connector ramps near Austin High School – Maximize pedestrian/cyclist routes Community input has been a valuable part of the development process for MoPac South, with adjustments made based on public input, including: – Added new direct connection at US 290 – Added new bypass lanes from Barton Skyway to Loop 360 – Added south to north Texas Turnaround at Barton Skyway – Lengthen turn lane leading to Texas Turnaround at Loop 360 – Reconfigured Bee Cave Road/RM 2244 southbound exit ramp – Ramp improvements at William Cannon Drive – Added third southbound and northbound general-purpose lane near William Cannon Drive – Additional American Disabilities Act (ADA) bike/ped crossings – Widened Shared Use Path – Additional bike/ped access on each side of the corridor – Relocated the Barton Springs Road Shared Use Path crossing to improve safety – Relocated northbound entrance ramp north of Loop 360 3 Open House 6 Content • Presented Recommended Build Alternative for public comment • Continuation of public engagement and input to shape the study • Evaluation for the build alternatives • Evaluation for the operation configurations • Description of environmental technical studies to be completed 4 Reasonable Build Alternative Why Express Lane(s): 5 Evaluation Criteria Optimize corridor utilization (throughput) Serve all roadway users Facilitate congestion management by increasing opportunities for pedestrians and bicycles 6 *Criteria was developed collaboratively with stakeholders and using input gathered from Open Houses #1 and #2. Create a dependable and consistent route for transit Recommended Build Alternative Why 2C: Two Express Lanes with Elevated Ramps near Barton Skyway 7 Environmental Evaluations 9 Non-Tolled Improvements Increased pedestrian and cyclist opportunities Sixth Street and Cesar Chavez Street entrance ramps to southbound MoPac Widens existing bridge over Lady Bird Lake to five non-tolled general-purpose lanes in both directions South-to-north non-signalized U-turn at Barton Skyway Southbound non-tolled bypass lanes for Bee Cave Road and Barton Skyway entrance to southbound MoPac to bypass signals Repaved general-purpose lanes throughout corridor Shift the southbound Bee Cave Road exit ramp further north to allow for safer weaving for westbound Bee Cave Road traffic Ramp reversal north of Loop 360 northbound frontage road to reduce congestion at northbound Loop 360 intersection Ramp operational improvements on the northbound frontage road north of William Cannon 10 Project Benefits 11 MoPac South Project Next Steps • Publish draft Environmental Assessment (EA) • Public Hearing • Post Public Hearing documentation and responses to comments • Submit Final EA 12 Thank You Visit mopacsouth.com to explore project information.