I-35 and Loop 337

Project ID (CSJ):  0016-05-107


Recent business developments and area growth near the intersection of Loop 337 and I-35 have increased traffic congestion, exceeding the highway's current capacity. Local leadership has partnered with TxDOT to develop a solution that will address the growing traffic and reduce the safety risks associated with the congestion.

Need & Purpose
  • Need:  Increased truck traffic along the I-35 corridor coupled with regional population growth in Texas has created travel demand that exceeds its current capacity. The existing I-35 facility through Central Texas is an essential element of the local and regional transportation system.
  • Purpose: The purpose of the project is to meet local and regional travel demands by increasing capacity; upgrading the transportation infrastructure to meet current FHWA and TxDOT design standards for interstates, bridges, and frontage roads; thereby improving the safety of travelers along I-35.
End Result
This project will address congestion while improving safety at this intersction by:
  • Adding lanes to Loop 337 between I-35 and Altgelt Road
  • Adding lanes to the Loop 337 overpass bridge at I-35
  • Improve turn-lanes along the I-35 access roads at Loop 337
  • Construction Cost Estimate:
    $3.2 million
  • Construction began spring 2014 and is expected to be complete late 2014

Project Vicinity Map


Josh Donat
Public Information Officer

TxDOT San Antonio District
4615 NW Loop 410
San Antonio, TX 78229-0929

(210) 615-5932