SAN ANTONIO – Drivers along Interstate 35 on San Antonio’s Northeast Side should plan for overnight closures and detours next week as construction continues on the I-35 Northeast Expansion Program.

The Texas Department of Transportation said several nightly closures are scheduled Oct. 26-30, 2026, weather permitting. Most closures are expected from 9 p.m. to 5 a.m. Monday through Thursday and from 11 p.m. to 7 a.m. Friday. Some closures are expected to occur periodically during those hours.

Northbound I-35 frontage road closures

TxDOT said the northbound I-35 frontage road between Space Center Drive and Rittiman Road will be closed nightly during the scheduled hours. Drivers on the northbound I-35 frontage road north of Space Center Drive will exit to the right to Industry Park Drive and re-enter the northbound I-35 frontage road at the next entrance ramp.

TxDOT also said the northbound I-35 frontage road north of Rittiman Road and northbound I-35 Exit 164 B will be closed nightly during the same time periods.

For drivers on the northbound I-35 frontage road who need to continue beyond Rittiman Road, TxDOT said they will turn right onto Rittiman Road, then turn left onto Fratt Road. Drivers on Center Park Boulevard, Dinn Drive and Remount Drive who are looking to access northbound I-35 will head toward Fratt Road and turn left, then turn left onto Eisenhauer Road and follow it back to the northbound I-35 frontage road.

Drivers on the northbound I-35 mainlanes who are looking to exit to access Eisenhauer Road via Exit 164 B will continue on the northbound I-35 mainlanes to Exit 165, entering the northbound I-35 frontage road. TxDOT said drivers will U-turn at Walzem Road, entering the southbound I-35 frontage road, and then may turn left or right onto Eisenhauer Road.

Southbound I-35 frontage road and exit closures

TxDOT said the southbound I-35 frontage road south of Fratt Road and southbound I-35 Exit 165 will have nightly closures that are expected to occur periodically during the scheduled hours.

During those closures, drivers on the southbound I-35 frontage road will follow detour signs by turning right on Fratt Road, turning left on Interchange Parkway, and turning left on Walzem Road, then turning right to re-enter the southbound I-35 frontage road.

Drivers on southbound I-35 who are looking to exit to Walzem Road via Exit 165 will continue on the southbound I-35 mainlanes and exit via Exit 164 B to the southbound I-35 frontage road. TxDOT said drivers will use the U-turn at Eisenhauer Road, entering the northbound I-35 frontage road, and follow it to Walzem Road.

TxDOT also said the southbound I-35 frontage road south of Walzem Road, southbound I-35 Exit 164 B and the northbound-to-southbound I-35 U-turn at Walzem Road will have nightly closures that are expected to occur periodically during the scheduled hours.

Drivers on the northbound I-35 frontage road who are looking to use the U-turn at Walzem Road will continue on the northbound I-35 frontage road to the Northeast I-410 Loop, keeping left to turn around at the southbound I-35 frontage road, and then follow the southbound I-35 frontage road detour, according to TxDOT.

Drivers on the southbound I-35 frontage road will follow detour signs by turning right on Walzem Road, turning left on Austin Highway, and turning left on Eisenhauer Road, then turning right to re-enter the southbound I-35 frontage road.

Drivers on southbound I-35 who are looking to exit to Eisenhauer Road via Exit 164 B will exit via the previous exit, Exit 165, and follow the southbound I-35 frontage road detour to Eisenhauer Road, TxDOT said.

Bridge construction detours near BAMC

TxDOT said additional closures are planned for bridge construction, including the southbound I-35 frontage road from Eisenhower Lane to Petroleum Drive and the southbound I-35 exit ramp south of Rittiman Road (Exit 162 to Brooke Army Medical Center and Binz Engleman Road). The closure is scheduled 9 p.m. to 5 a.m. Monday through Thursday and 11 p.m. to 7 a.m. Friday, Oct. 26-30, 2026, weather permitting.

TxDOT said the I-35 mainlanes and George Beach Avenue will remain open, and access to Brooke Army Medical Center will be maintained throughout the detours.

During the closure, travelers on the southbound I-35 frontage road will follow detour signs to take the southbound I-410 connector ramp, exit to the southbound I-410 frontage road, turn right on Binz Engleman Road to the northbound I-35 frontage road, and take the frontage road to the George Beach Avenue intersection.

From the George Beach Avenue intersection, TxDOT said travelers can turn left to continue on the southbound I-35 frontage road, access Brooke Army Medical Center on George Beach Avenue, or turn right to Petroleum Drive. TxDOT said the frontage road between George Beach Avenue and Petroleum Drive will be configured for two-way traffic, and law enforcement will control traffic at the George Beach Avenue intersection.