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I-35 from RM 1431 to FM 3406 (southbound)


The project reversed two ramps on southbound I-35 and improved the southbound frontage road between RM 1431 and FM 3406.

Need & Purpose

  • Improve safety and mobility

Project Description

  • Reversed ramps on the I-35 southbound frontage road to reduce vehicle weaving on I-35 mainlanes
  • Improved southbound frontage road by adding an auxiliary lane, or extended entrance/exit lane, between RM 1431 and FM 3406


  • Project funded by TxDOT
  • Construction cost: $9.2 million


  • Finalized schematic and environmental documentation: December 2014
  • Begin Plans, Specifications and Estimates (PS&E): July 2015
  • Complete PS&E: mid-2016
  • Construction letting: mid-2016
  • Construction start: late 2016
  • Construction completion: January 2019

Project Vicinity Map

RM 1431 to FM 3406 (Southbound) map


Public Information Officer
(512) 832-7000

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

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