Freight Routes • ELDT.LIVE
San Antonio I-10 Closure Sends Trucks onto a Separate Loop 1604 Detour
Eastbound I-10 closes overnight at Loop 1604 through early Monday, and trucks and oversize vehicles have a dedicated detour that differs from the passenger-vehicle route.
The overnight closure remains active this weekend
TxDOT is closing the eastbound I-10 mainlanes and both directions of the Loop 1604 frontage roads at the San Antonio interchange from 9 p.m. to 5 a.m. nightly, weather permitting, from Friday, October 16, through Monday, October 19. The work is part of bridge construction for the Loop 1604 North Expansion project. A driver whose trip reaches the interchange near the start or end of the window should verify the live status rather than assume the road has already closed or reopened.
Several through movements remain open
The eastbound and westbound Loop 1604 mainlanes, westbound I-10 mainlanes, both I-10 frontage roads, and all interchange flyovers are scheduled to remain open. That does not eliminate delay: traffic leaving the closed eastbound I-10 mainlanes and frontage-road users following local detours can add merging and turning pressure near the work zone. Dispatchers should build time into appointments without treating the closure as permission to exceed hours-of-service limits.
Trucks and oversize vehicles have a separate eastbound I-10 route
The posted truck and oversize detour directs eastbound I-10 traffic onto the flyover ramp to westbound Loop 1604. Drivers then take the Kyle Seale Parkway exit to the westbound Loop 1604 frontage road, use the U-turn at Kyle Seale Parkway, continue on the eastbound Loop 1604 frontage road, and follow signs to the eastbound I-10 flyover and mainlanes. This route differs from the general eastbound I-10 detour through the frontage road, so CMV drivers should follow the truck-specific signs rather than copying passenger traffic.
Do not improvise an oversize route
An oversize or overweight permit applies to the approved vehicle, load, timing, and route conditions. A work-zone detour can introduce turning-radius, vertical-clearance, lane-width, axle-weight, or escort issues that a passenger-vehicle navigation app will not identify. Before departure, compare the current closure with the permit route and contact the permit issuer, carrier safety team, or TxDOT when the authorized movement is unclear. Do not make an unapproved local-street deviation simply to avoid a queue.
Protect the hours-of-service and parking margin
A detour that adds only a few miles can still consume substantial duty time when traffic is concentrated at a frontage-road U-turn. Drivers approaching the end of a driving window should tell dispatch early, identify legal parking before entering the closure area, and preserve enough time to reach it. Stopping on a ramp shoulder, gore, turnaround, or frontage-road travel lane is not a safe substitute for trip planning.
Expect work-zone conflict points
Watch for late lane changes as unfamiliar motorists discover the closure, slower vehicles entering a flyover, construction equipment, temporary barriers, narrowed shoulders, and workers near live traffic. Increase following distance, reduce speed for conditions, avoid side-by-side travel through constrained sections, and complete lane changes early when signs direct them. A posted speed limit is a maximum, not a promise that the lane is safe at that speed in congestion or poor weather.
Check live information immediately before dispatch
TxDOT says Loop 1604 construction closures can change because of weather or other unforeseen circumstances and uses digital message boards for real-time warnings. Review the official Traffic Impacts page and DriveTexas before entering the corridor, then follow signs and law-enforcement or flagger instructions on scene. Record the check time in the trip plan so a dispatcher or relief driver knows which closure information was current when the route was selected.
The closure is part of a much larger interchange rebuild
The $1.4 billion Loop 1604 North Expansion program covers 23 miles from SH 16 to I-35 and includes replacement of the I-10/Loop 1604 cloverleaf with a five-level direct-connect interchange. That scale means recurring lane, ramp, frontage-road, intersection, and turnaround changes will continue beyond this weekend. Carriers that regularly serve northwest San Antonio should treat TxDOT closure checks as a standing dispatch step rather than a one-time exception.
Educational summaries help you prepare, but official FMCSA and state licensing sources remain the authority for current requirements.
Official sources
TxDOT — Loop 1604 North Expansion traffic impacts ↗TxDOT — Loop 1604 North Expansion project overview ↗DriveTexas — official live road conditions and closures ↗MySA — San Antonio's Loop 1604 to see nightly closures all weekend long ↗ELDT.live independently creates and reviews its content. We do not present practice questions as official examination questions and do not guarantee a licensing result.