I-35 Capital Express South Project

Project overview

The project includes adding elevated managed lanes between SH 71/Ben While Boulevard and Slaughter Lane and constructing a southbound I-35 bypass lane that will allow traffic to bypass Stassney Lane and William Cannon Drive.

The project will add two high-occupancy-vehicle (HOV) managed lanes in each direction along I-35 between SH 71/Ben White Boulevard and SH 45 Southeast. In addition, the project will reconstruct bridges, relocate and reconstruct entrance and exit ramps, add pedestrian and bicycle paths and make additional safety and mobility improvements within the project limits.

Latest update

• April 11, 2025

Schedule

• Construction start: November 2022
• Anticipated construction completion: Late 2028, weather permitting

Milestones

• Construct elevated lanes from SH 71/Ben White Boulevard to Slaughter Lane
• Construct at-grade managed lanes from Boggy Creek Drive to SH 45 Southeast
• Reconstruct I-35 bridge over South Boggy Creek
• Reconstruct I-35 bridge over Onion Creek
• Widen the I-35 bridge over Slaughter Creek
• Reconstruct I-35 entrance and exit ramps
• Construct shared-use paths along frontage roads
• Perform final paving and striping to finalize project

Funding

• Construction cost: $548 million funded by CAMPO and TxDOT

Contractor

• Fluor Corporation

Project area

Downloads

• Construction Information
• Construction Information (Espanol)
• Final Environmental Assessment
• Finding of No Significant Impact
• Schematics