Water main construction has started in Black Diamond, affecting traffic on Roberts Drive.

The work started last Monday, Feb. 27, and is expected to last for six months.

Work will be in phases, starting at State Route 169 to the Black Diamond Library, then the library to the Rock Creek Bridge, and finally from the bridge to Lake Sawyer Road.

Work hours will be from 7 a.m. to 5 p.m. Monday through Friday.

All west and east-bound traffic, pedestrians and bicyclists included, will be affected during these times, increased travel time and detours should be expected. Detour signs will be posted about temporary road access.

Local access to neighborhoods will be maintained.

Project updates will be posted on the city website at www.ci.blackdiamond.wa.us. For more information, call Master Development Review Team Director Andy Williamson at 360-886-5700 or email at mdrt@ci.blackdiamond.wa.us.