I-35 Capital Express South Project
Projects
Project overview
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 include a southbound I-35 bypass lane that will allow traffic to bypass Stassney Lane and William Cannon Drive. Entrance and exit ramps will also be reconstructed and relocated. Pedestrian and bicycle paths will also be added.
Major impacts/activity
Beginning Friday, Nov. 14, the southbound I-35 mainlanes in South Austin will be closed nightly to allow construction crews to work on the elevated managed lanes. To perform work safely and efficiently, crews will close the southbound I-35 mainlanes from SH 71/Ben White Boulevard to Stassney Lane for two nights, weather permitting. Detours will be in place (see detour map).
The closures will occur nightly:
- Friday, Nov. 14 from 11 p.m. to 9 a.m.
- Saturday, Nov. 15 from 11 p.m. to 10 a.m.
Note: Both access ramps from eastbound and westbound SH 71/Ben White Boulevard to southbound I-35 will be closed during this operation.
Latest update
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
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