This page contains I-35E Project information, including history, environmental review and project status.

Project History/Timeline

  • 1950s/1960s - I-35E is constructed
  • 1998 - Major Investment Study for future expansion
  • 2003 - 2011 - Environmental Assessment process
  • 2011 - Finding of No Significant Impact by FHWA (all sections)
  • 2013-2018 – Phase 1 I-35E Managed Lanes project construction
  • 2021 – TBD – Phase 2 project construction

Environmental Review Status

  • 2008 - Environmental Assessment public meetings
  • Oct. 28, 2009 - FHWA schematic approval for all three sections
  • Nov. 18, 2010 - Middle section public hearing
  • Oct. 20, 2011 - North section public hearing
  • Sept. 27, 2011 - South section public hearing
  • Late 2011 - Finding of No Significant Impact by FHWA (all sections)

Project Facts

  • Length
    • North section (US 380 to FM 2181): 10.5 miles
    • Middle section (FM 2181 to President George Bush Turnpike): 12.1 miles
    • South section (President George Bush Turnpike to I-635): 5.5 miles
  • Construction dates
    • Phase 1 of the I-35E project began construction in 2023 and was completed in 2018
    • Phase 2 of the I-35E project is anticipated to begin construction late 2021
    • Future phases of the I-35E project will be progressed as funding becomes available

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