I-35 Northeast Expansion Central Project update in San Antonio, TX

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HOV lanes can be seen on elevated roadways (indicated by ◊). | Rendering via TxDOT

Table of Contents

You may remember our story back in January on three major road construction projects coming to San Antonio.

Well, one project has officially broken ground on its first phase and might bring big changes to your commute — we’re breaking down what you need to know about the I-35 Northeast Expansion Central Project.

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The project will expand the area to fit a total of 20 lanes of traffic. | Rendering via TxDOT

🛣️ About the project

Here’s a quick recap of the scope of the project.

  • The project will focus on 9.5 miles along I-35 from I-410 North to FM 3009.
  • Planned for the area are three elevated lanes in both directions.
  • The new roads will be non-tolled and include high-occupancy vehicle (HOV) lanes.
  • The project also plans to incorporate flyovers to I-410 North and Loop 1604 West.
  • Total design-build cost is estimated at $1.5 billion + is expected to be completed in 2027.
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The I-35 NEX Central Project intends to reduce travel time for drivers. | Rendering via TxDOT

🛣️ Lane closures

Like with any major roadway project under construction, major disturbances with traffic are expected. The good news: lane closures have been confined to 9 p.m.- 5 a.m. Here are just a few to have on your radar:

  • Right mainlane closure on southbound I-35 from Forum Parkway to Pat Booker Road
  • Left lane closure on northbound frontage road of I-35 from Pat Booker Road to Forum Parkway
  • Right lane closure on northbound frontage road of I-35 from Pat Booker Road to Loop 1604
  • Olympia Parkway exit ramp (exit 173) closure on northbound I-35 and left lane closure on northbound frontage road of I-35 from Forum Access to Olympia Parkway
  • Visit TxDOT’s website for a full list of lane closures across the entire city.
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Alamo NEX Construction is the team behind the construction. | Rendering via TxDOT

🛣️ How to stay updated

While we try to be your first source for local news, we also suggest checking out the following resources for timely updates:

  • Check out the official TxDOT blog.
  • See the department’s Facebook and Twitter page.
  • You can also sign up for e-alerts for updates straight to your inbox.
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