LEAGUE CITY — If you’ve driven along Walker Street near Centerpointe Drive recently, you may have noticed a long stretch of temporary piping running through the area.

It’s not a new permanent sewer line. The roughly 3,400-foot system is a temporary wastewater bypass installed while League City crews rehabilitate part of the city’s sanitary sewer system.

The bypass allows wastewater to continue flowing while crews work on a 54-inch manhole in the area, according to the city.

That work has to be performed under dry conditions, meaning wastewater normally flowing through the infrastructure must be temporarily redirected.

The 54-inch sewer line serves a large portion of League City west of Interstate 45 and was constructed before the Centerpointe subdivision was developed.

The temporary bypass crosses Walker Street near Centerpointe Drive and will remain in place until the rehabilitation work is finished.

The work is part of a larger project involving 36 sanitary sewer manholes throughout League City, including five in the Centerpointe subdivision.

Crews are installing corrosion-resistant liners, replacing rings and covers, repairing risers and replacing manholes where necessary. Major rehabilitation work is also underway at a converted lift station near the Oaks of Clear Creek subdivision.

League City expects the overall project to be completed by mid-September.