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I-35 from SE Inner Loop to RM 1431 (southbound)


This project includes improving traffic flow at the I-35 frontage road intersections of SE Inner Loop and Westinghouse Road, reducing lane merging/weaving along the southbound I-35 mainlanes and frontage road and reconstructing the Westinghouse Road bridge to improve safety, operations and meet current design standards.

Need & Purpose

  • Improve safety and mobility

Project Description

  • Remove Westinghouse Road bridge and construct new I-35 bridge over Westinghouse Road
  • Construct westbound to southbound Continuous Flow Intersection (CFI) at Westinghouse Road
  • Improve intersection at I-35 and SE Inner Loop
  • Improve existing southbound I-35 frontage road from north of SE Inner Loop to RM 1431
  • Reverse entrance/exit ramps along the southbound I-35 frontage road between SE Inner Loop and RM 1431
  • Improve bicycle and pedestrian sidewalks and paths


  • Project development funded by TxDOT
  • Construction cost estimate: $42.8 million 


  • Finalized schematic and environmental documentation: anticipated mid-2021
  • Complete PS&E: anticipated early 2025
  • Construction letting/start: TBD pending future 


Project Vicinity Map

SE Inner Loop to RM 1431 map


Public Information Officer
(512) 832-7000

TxDOT Austin District
P.O. Box 15426
Austin, TX 78761-5426

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