Future Transportation Corridor

The Future Transportation Corridor is an area for additional capacity on I-35 for 60 miles through Williamson, Travis and Hays counties that would provide the single largest mobility gain for I-35.

  • Extends from SH 130 (north of Georgetown) to Posey Road (south of San Marcos)
  • Benefits include increased capacity, improved mobility and increased reliability

A Planning and Environmental Linkages Study (PEL) was conducted to help determine how this lane would be used in Travis County. There were nine potential lane type alternatives/mode choices considered for the Future Transportation Corridor:

  • General purpose lanes
  • High occupancy vehicle lanes with transit
  • Express lanes with transit
  • Express lanes with enhanced transit access
  • Rail
  • Through-traffic only lanes
  • Transit-only lanes
  • Freight-only lanes
  • No build

The PEL Study recommended that two express lane alternatives be further evaluated in future National Environmental Policy Act (NEPA) studies: an express lane with transit and an express lane with enhanced transit access.

The PEL study also determined the purpose and need and three logical segments of independent utility (three stand-alone projects) for the Future Transportation Corridor in Travis County. The three stand-alone projects were determined to be:

  • SH 45N to US 183*
  • US 183 to Riverside Drive
  • Riverside Drive to SH 45SE

*After further traffic analysis, the northern limit for this project was extended from SH 45N to RM 1431.

The lane type alternative/mode choice has not yet been determined for the Future Transportation Corridor in Hays and Williamson counties.

Proposed and existing configuration
Proposed and existing configuration