Cass Avenue in north St. Louis turned into a late-night mess Thursday when a 30-inch feeder water main ruptured near Tucker Boulevard, sending water gushing across the roadway and bringing traffic to a halt.
Crews arrived around 10 p.m., and city workers quickly shut off water to the affected stretch, closing Cass between 8th and 12th streets to drivers. People in the area reported standing water, barricades and detours as repair teams worked to secure the scene.
First Alert 4 spoke with a worker who said crews have been on site since about 10 p.m. and are focused on isolating and fixing the line. According to First Alert 4, the ruptured pipe is a 30-inch feeder main, and officials are urging motorists to steer clear of Cass at Tucker while repairs continue.
City Crews Respond, Water Shutoffs Underway
City of St. Louis Water Division records show repair work orders being logged late Thursday, and the division is posting frequent updates on its outage page. According to the City of St. Louis Water Division, customers with service problems can call (314) 771-2255 or report outages through the city’s online portal.
Why This Stretch Matters
Cass Avenue has had its share of infrastructure headaches in recent years. Last spring, a sinkhole that closed Cass and 17th Street triggered another round of emergency repairs and multi-agency traffic shutdowns, underscoring how fragile this corridor can be.
For now, drivers should expect detours and delays while crews work to isolate and repair the damaged pipe. Residents who notice low water pressure or discolored water are advised to follow the water division’s guidance on flushing household lines. The outage page lists step-by-step tips and hotline numbers for immediate questions and updates, per the City of St. Louis Water Division.
This remains a developing situation, and officials are still assessing the damage and timeline for full repairs. We will update this story as new information becomes available from First Alert 4.
