7th Street SW closes for water main replacement in Jamestown

Southwest Jamestown drivers will lose a short but important connector when 7th Street Southwest closes between 4th Avenue Southwest and 5th Avenue Southwest for a water main replacement. The shutdown is set to begin Wednesday, June 24, and the city says the block should stay closed for about one to two weeks, or until the work is finished.

The closure affects a residential and business travel corridor in the 400 block of 7th St SW, where traffic will have to shift to alternate routes while crews work. The city has asked motorists to plan ahead and expect access changes around the work zone until the street reopens.

This is not a one-off cut in the pavement. City records show the Jamestown City Council considered District #25-61 on March 27, 2025, for the 2025 Water Main Project, which was designed to replace deteriorated water mains and related infrastructure in multiple locations, including the 400 block of 7th St SW. City project materials say Jamestown is working with Interstate Engineering and Crow River Construction to replace aging watermains and improve service and reliability.

The broader upgrade effort carries a $1.62 million Drinking Water State Revolving Fund loan to replace 14 blocks of cast iron water mains, along with valves and hydrants, with PVC pipe. City officials have tied that financing to lower maintenance costs and stronger water service, a sign the work is aimed at preventing the kinds of breaks, leaks and service problems that older mains can create.

Jamestown’s engineering department oversees design, inspection and coordination of infrastructure repair and construction projects, and the current closure fits that pattern of recurring utility work across town. A separate city notice in May 2026 documented other road closures and water outages tied to utility repairs, showing how a single project can ripple well beyond one block when crews are replacing underground infrastructure.

For residents and nearby businesses, the practical effect is straightforward: expect detours, slower trips and changing access near 7th Street SW until the excavation and replacement work ends. The city has also continued to roll out other water-system work in 2026, including a separate water main project on 4th Ave NW, which suggests more utility projects remain on Jamestown’s calendar as the city keeps chipping away at aging lines.