What TxDOT's Summer 2025 I-35 NEX Lane Closures Mean for San Antonio Homeowners

If you own a home along the I-35 corridor north or south of San Antonio, your daily commute is about to get more complicated. TxDOT has announced summer 2025 lane closures tied to the I-35 Northeast Expansion project, and the timing and locations will directly affect residents in communities stretching from the South Side all the way through Schertz, Cibolo, and Selma.

Here is what is confirmed. The southbound I-35 left lane between FM 3009 and FM 1518 will be closed through July 13. The northbound left lane between FM 1518 and Loop 1604 will be closed through August 2. That means anyone driving to or from work in downtown San Antonio, the South Texas Medical Center, or Joint Base San Antonio during the peak summer travel season will face lane reductions on one of the metro's busiest highways for weeks at a time.

For homeowners, these are not just traffic headaches. They have real implications for your daily routine, your property's appeal to buyers, and your neighborhood's long-term trajectory.

If you live in Schertz, Universal City, Selma, or the communities around FM 3009 and FM 1518, plan now for longer commute windows. The closures run right through the heart of summer, when construction activity typically peaks and traffic volume from vacationers and back-to-school shoppers adds to the mix. Leaving earlier, identifying alternate routes through Lookout Road or FM 78, and communicating flexible work arrangements with your employer can all reduce the stress of the coming weeks.

For homeowners in the Schertz-Cibolo-Universal City ISD zone or the Judson ISD attendance area, back-to-school season in August is going to coincide directly with the northbound closure between FM 1518 and Loop 1604. That stretch feeds into some of the fastest-growing residential areas in Bexar and Guadalupe counties. If you have children returning to school in late July or early August, factor the closure into your morning schedule well before the first day of class.

If you are thinking about selling your home this summer, the closures are worth acknowledging honestly with potential buyers during showings. Buyers doing their homework will notice the construction activity and wonder how bad traffic is day to day. Being upfront and pointing to the long-term payoff of the project actually works in your favor. The I-35 NEX program is expanding roughly 20 miles of freeway from North Walters Street to FM 1103, which ultimately means more lanes, better traffic flow, and improved access to one of the region's most economically important corridors. That is a selling point, not just a disruption.

For buyers currently shopping in ZIP codes like 78154 in Schertz or 78130 in the New Braunfels gateway, it is worth driving your potential commute route at rush hour right now, before you make an offer. What you experience today, with one lane temporarily closed, gives you a realistic preview of conditions during the project. The good news is that both the Central project and South Phase 1 have completion targets. The Central project is expected to wrap in late 2027, and South Phase 1 is slated for completion in late 2028. Construction timelines can shift, but these benchmarks give you a reasonable sense of when the long-term improvements will materialize.

Renters and landlords along the corridor should also pay attention. Properties closest to the work zones may see slightly reduced demand from tenants who have flexibility in where they lease, particularly if commute times spike noticeably in June and July. Landlords near FM 3009 or Loop 1604 access points may want to highlight proximity to alternate routes in their listings and make sure tenants are aware of the closures before they sign a lease.

If you own a home and are simply staying put through the construction, the most practical thing you can do right now is use TxDOT's DriveTexas app or website to monitor real-time lane closure updates. The agency posts information about active and upcoming closures, and knowing which lanes are affected on any given day takes some of the guesswork out of your morning.

The bigger picture here is positive for the region. I-35 has struggled under the pressure of San Antonio's growth for years, and the NEX expansion represents a significant long-term investment in the corridor that runs through some of the city's most active housing markets. Getting there requires patience, and this summer is one of the more demanding stretches of that process. Planning ahead, staying informed, and keeping an eye on the project's milestones will help you navigate both the construction and any real estate decisions tied to it.