San Luis sewer project starts on Cesar Chavez Boulevard

Traffic on Cesar Chavez Boulevard in San Luis started tightening as Yuma Valley Contractors, Inc. moved into the Lift Station 300 sewer force main project between Hidalgo Avenue and Main Canal Road, just east of the West Wastewater Treatment Plant. The city said lane restrictions and traffic control would stay in place for the duration of the work, and drivers should expect slower trips through one of the city’s most heavily used utility corridors.

The project was scheduled to run for about 120 days, putting pressure on daily commutes, neighborhood access and any business that depends on steady traffic past Cesar Chavez Boulevard. City officials urged drivers to plan ahead, follow posted traffic-control signs, reduce speed in the construction zone and allow extra time. The notice also asked motorists to respect residential streets if they were used as detours, a sign that the disruption could spill beyond the main work zone and into nearby neighborhoods.

At the center of the project is San Luis’s wastewater system. A city ordinance tied to the wastewater diversion lift-station effort said the work was meant to proceed without further delay, create treatment capacity at the West Main Wastewater Treatment Plant and support public health. A City of San Luis project listing places the West Wastewater Treatment Plant at 101 West Cesar Chavez Boulevard and says the expansion is intended to increase treatment capacity from 1.5 million gallons per day to 3.0 million gallons per day.

That scale helps explain why the city is treating the lane restriction as part of a larger infrastructure buildout rather than a routine patch. If the work were delayed, the pressure would remain on an already busy wastewater network serving a growing border city, leaving less room for service reliability and future capacity. Prior sewer-related lane restrictions on Cesar Chavez Boulevard in 2025 show the corridor has already been pulled into the city’s long-running effort to strengthen underground infrastructure.

San Luis Public Works said questions about the project can be directed to 928-341-8577. For after-hours emergencies, the department lists 928-341-2420. For the next four months, the message for anyone traveling Cesar Chavez Boulevard is straightforward: expect delays, stay alert and give the construction crews room to work on a system the city says it cannot afford to postpone.