South Austin, Texas, January 13, 2026
Significant construction initiatives on Interstate 35 (I-35) in South Austin aim to improve traffic flow and infrastructure. These projects include the I-35 Capital Express South and Central Projects, alongside a new drainage tunnel to manage stormwater, enhancing safety for drivers and pedestrians. As these developments progress, they promise to benefit local businesses and commuting efficiency while minimizing disruptions for residents.
Major Construction Projects Underway on I-35 in South Austin
Austin, Texas – Significant construction projects are currently underway on Interstate 35 (I-35) in South Austin, aiming to enhance traffic flow, safety, and infrastructure. These initiatives are part of the Texas Department of Transportation’s (TxDOT) broader efforts to improve the I-35 corridor, ultimately benefiting local businesses and commuters alike.
As Austin continues to grow and evolve, it’s vital that the infrastructure keeps pace with the needs of its residents and entrepreneurs. By investing in essential construction projects such as the ones on I-35, Texas leaders aim to foster a more efficient transportation network. With limited regulatory hurdles, these improvements not only address current challenges but also set the stage for future economic growth.
Ongoing Construction Projects
Several major construction projects are currently underway on I-35 in South Austin, including:
- I-35 Capital Express South Project: This project involves adding two high-occupancy-vehicle (HOV) lanes in each direction along I-35, reconstructing overpasses, and improving frontage roads. Construction began in late 2022 and is expected to be completed by late 2028. The project is funded by the Capital Area Metropolitan Planning Organization (CAMPO) and TxDOT, with Fluor Corporation serving as the contractor.
- I-35 Capital Express Central Project: This initiative focuses on reconstructing and lowering the main lanes of I-35 between Lady Bird Lake and Airport Boulevard, adding two non-tolled HOV lanes in each direction, and enhancing pedestrian and bicycle paths. Construction is expected to begin in mid-2024.
- Drainage Tunnel and Pump Station Project: TxDOT is constructing a 6.5-mile drainage tunnel and a new pump station to manage stormwater and reduce flooding along I-35. Excavation work has been completed at several locations, including Airport Boulevard, 11th Street, Cesar Chavez Street, and River Street.
Traffic Impacts and Road Closures
Motorists should anticipate various traffic changes and road closures due to these construction projects. Notably, the I-35 Capital Express South Project has led to lane reductions and detours in certain areas. Drivers are advised to stay informed about current traffic patterns and plan their routes accordingly.
Project Timelines and Phases
The construction projects are organized into multiple phases, each with specific objectives and timelines. For instance, the I-35 Capital Express South Project is divided into four phases focusing on different aspects such as constructing elevated managed lanes, widening bridges, and adding shared-use paths. The entire project is expected to be completed by late 2028.
Community Engagement and Future Developments
TxDOT is committed to keeping the public informed and engaged throughout the construction process. The “Our Future 35” initiative aims to create public spaces along the I-35 corridor, reconnecting East and West Austin. This includes constructing “caps” and “stitches” over the highway to provide new public spaces.
As construction progresses, residents and commuters are encouraged to stay updated on project developments and plan their travel routes accordingly to minimize disruptions.
FAQ
What is the I-35 Capital Express South Project?
The I-35 Capital Express South Project is a construction initiative that involves adding two high-occupancy-vehicle (HOV) lanes in each direction along I-35, reconstructing overpasses, and improving frontage roads. Construction began in late 2022 and is expected to be completed by late 2028.
When is the I-35 Capital Express Central Project expected to begin?
The I-35 Capital Express Central Project is expected to begin in mid-2024.
What is the purpose of the Drainage Tunnel and Pump Station Project?
The Drainage Tunnel and Pump Station Project aims to construct a 6.5-mile drainage tunnel and a new pump station to manage stormwater and reduce flooding along I-35. Excavation work has been completed at several locations, including Airport Boulevard, 11th Street, Cesar Chavez Street, and River Street.
How will these construction projects affect traffic in South Austin?
Motorists should anticipate various traffic changes and road closures due to these construction projects. Notably, the I-35 Capital Express South Project has led to lane reductions and detours in certain areas. Drivers are advised to stay informed about current traffic patterns and plan their routes accordingly.
What is the “Our Future 35” initiative?
The “Our Future 35” initiative is a community-centered effort to create public spaces along the I-35 corridor, reconnecting East and West Austin. This includes constructing “caps” and “stitches” over the highway to provide new public spaces.
Key Features of I-35 Construction Projects in South Austin
| Project Name | Scope | Start Date | Expected Completion | Key Components |
|---|---|---|---|---|
| I-35 Capital Express South Project | Adding two HOV lanes in each direction, reconstructing overpasses, improving frontage roads | Late 2022 | Late 2028 | Elevated managed lanes, bridge widenings, shared-use paths |
| I-35 Capital Express Central Project | Reconstructing and lowering main lanes, adding two HOV lanes in each direction, enhancing pedestrian and bicycle paths | Mid-2024 | 2028 | Bridge reconstructions, lowered lanes, shared-use paths |
| Drainage Tunnel and Pump Station Project | Constructing a 6.5-mile drainage tunnel and a new pump station to manage stormwater and reduce flooding | Ongoing | Ongoing | Excavation at multiple locations, tunnel construction, pump station installation |
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