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


The project improves the I-35 northbound frontage road and exit ramp between RM 1431 and FM 3406.

Need & Purpose

  • Improve safety and mobility

Project Description

  • Reconstruct/widen the I-35 northbound frontage road from two to three lanes between RM 1431 and FM 3406
  • Relocate the exit ramp to RM 1431 and extend the existing auxiliary lane, or extended entrance/exit lane


  • Construction funded by the Capital Area Metropolitan Planning Organization and TxDOT
  • Construction cost: $10.7 million


  • Finalized schematic and environmental documentation: December 2014
  • Begin Plans, Specifications and Estimates (PS&E): June 2016
  • Complete PS&E: early 2019
  • Construction letting: early 2019
  • Construction start: mid-2019
  • Construction completion: anticipated early 2021

Project Activity


Project Vicinity Map

RM 1431 to FM 3406 (Northbound) map


Public Information Officer
(512) 832-7000

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

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