Chip-and-seal operations began this week on various county-maintained roads, said Keith Browning, Douglas County public works director.

The county’s contractor, Vance Brothers Inc., began work in the northwestern area of the county near Lecompton.

About 36 miles of road will be sealed this season at a cost of about $504,000, Browning said. The work should be done by Sept. 15 if the weather cooperates, he said.

Traffic control during chip-and-seal operations will involve pilot vehicles and flaggers. Motorists should expect some delays when traveling on those roads.

Following pilot vehicles properly and driving slowly will reduce the chance of getting asphalt emulsion on a vehicle, Browning said.

Chip sealing is a process intended to preserve and protect the existing pavement.