Water Main Break Closes Broadway Underpass
A 24-inch cast-iron water main broke beneath the Broadway underpass in San Antonio, forcing a full road closure.
Updated on Nov. 4, 2026 in Natural Disasters
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A 24-inch cast-iron water main broke around 4 a.m. Wednesday beneath the Broadway underpass in San Antonio, damaging the roadway. The Broadway underpass between Roy Smith and Casa Blanca is closed to traffic while crews work on repairs.
Why it matters
The closure affects drivers traveling through the Broadway corridor in San Antonio and forces traffic onto alternate routes. Water service remains unaffected for residents.
The break involved a 24-inch cast-iron water main, which occurred around 4 a.m. Wednesday beneath the Broadway underpass. Crews have not yet announced when the road will reopen.
The details
The water main break damaged the roadway beneath the Broadway underpass, requiring a full road closure between Roy Smith and Casa Blanca. Drivers are being urged to use alternate routes over the next several hours while crews work to repair both the road and the water main.
Timeline
Around 4 a.m. Wednesday: water main breaks beneath the Broadway underpass.
Next several hours: drivers urged to use alternate routes while repairs proceed.
Seasonal Patterns
Failures of aging cast-iron water mains are a recurring challenge for older U.S. municipal systems, and this break under the Broadway underpass fits that pattern of infrastructure stress. The incident underscores how buried pipe age can translate directly into road closures in urban corridors.
Drivers should use alternate routes around the Broadway underpass between Roy Smith and Casa Blanca while the road is closed. Residents should plan extra travel time in the area until crews announce the road has reopened.
The takeaway
Aging underground infrastructure can disrupt everyday travel with little warning, so checking traffic updates before heading out helps avoid delays on closed corridors like Broadway.
Further reading
For more on regional emergencies, see Natural Disasters coverage in San Antonio.
Source note: This article includes information reported by MySA.
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