San Antonio Weekend Traffic Alert: Major Closures, Flooded Roads, and Construction Set to Impact Drivers Across Key Corridors

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Heavy Rain Triggers Widespread Road Closures

Severe weather across San Antonio has already forced 30+ road closures due to flooding, affecting major routes including I-35, I-10, Highway 90, and low-lying crossings near creeks. Authorities warn conditions may continue into the weekend, especially in North, Northeast, and West areas.

Officials continue to stress: “Turn around, don’t drown” as water levels remain unpredictable.

Weekend Construction Closures (Loop 1604 & I-10 Area)

Drivers should prepare for planned overnight shutdowns tied to the massive expansion project:

  • Loop 1604 at I-10 interchange
  • Closure times:
    Friday–Sunday nights | 9:00 PM – 5:00 AM
  • Impact: Main lanes and ramps closed, detours required

Additionally:

  • Blanco Rd & Loop 1604
    Closed: Friday 9 PM → Saturday 3 PM
    (Local traffic only, no through access)
  • La Cantera Parkway exit (WB 1604)
    Now permanently closed — access rerouted

Active Incident Impact (As of Now)

  • Loop 1604 near Somerset Rd partially shut down due to a jackknifed 18-wheeler with fuel leak
  • Expect delays and emergency response presence

Suggested Detours & Alternate Routes (Community Guide)

If traveling Loop 1604 / I-10:

  • Use access roads + UTSA Blvd turnaround
  • Exit earlier and reconnect via frontage roads
  • Consider Vance Jackson Rd to bypass La Cantera area

If flooding is present:

  • Avoid creek crossings (Salado Creek, Cibolo Creek zones)
  • Shift to higher-elevation highways when possible
  • Delay travel during heavy rainfall hours

General Advice:

  • Expect night congestion due to lane reductions
  • Allow extra 20–40 minutes travel time
  • Follow posted detour signage and police guidance

Community Reminder

With construction and severe weather overlapping, San Antonio drivers are facing a high-risk travel window this weekend. Officials recommend limiting non-essential travel, especially at night or during storms.

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