Mathews Street to close from Mountain to Oak for waterline replacement


Mathews Street from Mountain Avenue to Oak Street in downtown Fort Collins will be closed starting Monday for approximately eight weeks while Fort Collins Utilities crews replace an aging waterline. 

Water service will continue in the area throughout construction using the old water main until the new pipe is installed ready for operation. 

While pedestrian access to businesses and homes along Mathews Street will be maintained during construction, streets and intersections will be closed for safety and efficiency. Some disturbance to landscaping and parkways will occur but will be restored before the project is finished.

Barricades and fences will be used to mark areas of excavation at nights and on weekends, according to a city press release, and the city will use open trench construction for the project. Detour routes will be provided as the need arises. 

City staff are asking that people keep children and pets away from construction zones.

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Mathews Street will be closed between Mountain Avenue and Oak Street starting Aug. 8 so the city can replaced about 500 linear feet of waterline. The construction is estimated to last about eight weeks.

Replacement of the water main is expected to “improve system reliability, protect water quality and increase fire protection for residents and businesses in the area,” according to the city. 

The first phase of the project will also require one eastbound lane closure on Mountain Avenue so that crews can connect the new water main into the existing water main. That one-lane closure is expected to last from Aug. 8 to Aug. 18, according to utilities spokesperson Maia Jackson, but crews will work to get that open as soon as possible.

About 500 linear feet of 4-inch cast iron that was installed in the early 1900s will be replaced with 8-inch PVC. Neighborhoods in Old Town have aging infrastructure containing the oldest 50 miles of water main in the city. 

Periodic updates on the project’s status will be posted on Nextdoor, according to the city. 

For more information, such as parking options and a project timeline, visit

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Molly Bohannon covers city government for the Coloradoan. Follow her on Twitter @molboha or contact her at Support her work and that of other Coloradoan journalists by purchasing a digital subscription today.