As part of the ongoing Loop 1604 North Expansion project, the Texas Department of Transportation has opened a new flyover ramp at the Loop 1604 and I-10 interchange Oct. 5.

This flyover ramp will provide a connection from westbound I-10 to eastbound Loop 1604.

The gist

According to a news release from TxDOT, this is the fifth flyover ramp to open in the last 10 months.

Open I-10 and Loop 1604 interchange flyover ramps:
  • Flyover ramp connecting eastbound Loop 1604 to westbound I-10 opened December 2024
  • Flyover ramp connecting westbound I-10 to westbound Loop 1604 opened in early June 2025
  • Flyover ramp connecting westbound Loop 1604 to eastbound I-10 opened in August 2025
  • Flyover ramp connecting eastbound Loop 1604 to eastbound I-10 opened in September 2025
According to the news release, drivers will be able to access the flyover ramp on I-10 past UTSA Boulevard and will be able enter Loop 1604 after Lockhill Selma Road. All eight flyovers are expected to be open by the end of 2026.


The background

Once complete, the five-level interchange will consist of eight flyover ramps, roundabouts, a high-occupancy vehicle lane and other interchange improvements.

Jennifer Serold, public information officer for TxDOT's San Antonio district, said the first level of the interchange will consist of roundabouts at the ground level, providing access to adjacent properties. On the first level, new turnarounds and sidewalks will be added along I-10. Additionally, the existing VIA Park and Ride facility will be modified to fit underneath the new interchange.

The second level will include the I-10 main lanes and maintain additional space for any future expansions of I-10 through the interchange. Additional proposed improvements on the second level include new collector-distributor roads along I-10, which will help local traffic flow and provide drivers an opportunity to bypass the roundabouts.


The third level will consist of the Loop 1604 main lanes, which will be expanded with an additional main lane and an HOV lane in each direction. Improvements will include an 18.5-foot vertical clearance for large trucks and additional collector-distributor roads on the outside of the main lanes.

The fourth and fifth levels will include the eight flyover ramps, which will provide higher speed connections between Loop 1604 and I-10, according to the release.