I-35 At SH 123 Project Moves Into Next Phase Of Development In San Marcos
Design work on the project follows public outreach and environmental clearance obtained in 2017. Final design on the project is expected to be completed in early 2020, and construction is anticipated to begin…
Texas Department of Transportation, (TxDOT) has begun the Plans, Specifications, and Estimates or PS&E phase of the I-35 at SH 123 project in San Marcos.
- Reconstruct and improve the SH 123 traditional interchange
- Reverse four ramps along the northbound frontage road between SH 80 and RM 12
- Reverse one entrance ramp along the southbound frontage road between SH 80 and SH 123
- Realign the existing southbound exit ramp to SH 123 (CM Allen Parkway)
- Relocate the entrance ramp along the southbound frontage road from SH 80
- Reconstruct portions of the northbound and southbound frontage roads, including improving bicycle and pedestrian accommodations
- Reconstruct the frontage road bridges over Willow Springs Creek
- Raise and reconstruct the northbound frontage road bridge over the San Marcos River
- Widen the southbound frontage road bridge over the San Marcos River
- Reconstruct the mainlanes and bridge over SH 123
- Add auxiliary lanes, or extended entrance/exit lanes, to the mainlanes and frontage roads
Funding
- Project development funded by TxDOT
- Construction funded by Capital Metropolitan Planning Organization (CAMPO) and TxDOT
- Construction cost estimate: $107 million
Schedule
- Finalized schematic and environmental documentation: anticipated late 2017
- Begin Plans Specifications and Estimates (PS&E) documentation: anticipated late 2017
- Complete PS&E: anticipated early 2020
- Construction letting: anticipated early 2020
- Construction start: anticipated mid-2020
- Construction completion: anticipated late 2022
Design work on the project follows public outreach and environmental clearance obtained in 2017. Final design on the project is expected to be completed in early 2020, and construction is anticipated to begin in mid-2020, if funding is available. The estimated $107 million construction project is expected to be funded by the Capital Metropolitan Planning Organization and TxDOT.
In the printable PDF below are comments that TxDOT derived from a public meeting that was held on October 25, 2016. Additionally we highlighted San Marcos City Council who made comments on the project.
