Both directions of Loop 1604 at the I-10 interchange, along with the I-10 frontage roads, are shutting down for the entire weekend as TxDOT crews tackle bridge work. The full closure starts at 9 p.m. today and is scheduled to wrap up by 5 a.m. Monday. Drivers who normally cut through that interchange should bank on serious delays and be ready to follow posted detours.
Detours And What To Expect
TxDOT says the closure kicks in at 9 p.m. Friday and runs straight through until 5 a.m. Monday, with detailed detours already mapped out for anyone heading past the interchange, according to MySA.
For drivers on the eastbound I-10 frontage road, the plan is to keep right to enter the westbound Loop 1604 frontage road, follow that to La Cantera Parkway, make a U-turn to get back onto the eastbound frontage road, then keep right again to return to eastbound I-10.
Motorists on the westbound I-10 frontage road will use the mirror setup: follow the detour to Vance Jackson Road, use the U-turn there to loop back to the westbound frontage road, or take the last exit before the interchange and use the frontage roads to re-enter the highway.
Blanco Road Ramp Closure And Other Impacts
The weekend shutdown coincides with the closure of the westbound Loop 1604 exit ramp to Blanco Road, expected to last about three weeks, potentially worsening North Side traffic. Detour signs will mark alternate routes while crews set beams and widen bridge sections near La Cantera and The Rim. Drivers who usually use the Blanco Road exit are advised to take Rogers Ranch/Bitters Road or other nearby exits.
Part Of A Much Larger Expansion
This traffic headache plugs into the larger Loop 1604 North Expansion Project, a multi-segment effort to widen the corridor and rebuild the I-10/1604 interchange. According to TxDOT, Segments 1-4 are currently under construction and project work is expected to continue through 2028, with the I-10/1604 interchange (Segment 2) slated for completion in 2027.
Local coverage has tracked the steady rollout of new flyover ramps and warned that crews will still need intermittent major weekend closures to set bridge elements, as KSAT has noted.
Before You Go
If you have a choice, steer clear of the I-10/1604 interchange this weekend. If you do have to drive through, give yourself extra time and follow the posted detours closely. For real-time updates on delays, crashes and closures, check MySA. It is also worth adjusting pickup spots and delivery windows if you have shopping, errands or meetups near La Cantera, UTSA or Blanco Road.
