Sonoma County is — or soon will be — working on nine main roads, so you can expect traffic delays on them.

Using $6 million in federal stimulus money, the county will be chip sealing these roads:

–Dry Creek Road, from Healdsburg to Dry Creek Bridge.

–Healdsburg Avenue, from Alexander Valley to Lytton Station roads.

–River Road, from Highway 116 to Argonne Way.

–Petrified Forest Road, from Porter Creek Road to the Napa County line.

–Armstrong Woods Road, from Sweetwater Springs Road to Highway 116.

–Old Redwood Highway, from Santa Rosa to Windsor.

–Westside Road, from Sweetwater Springs Road to Healdsburg.

–Canyon Road, from Highways 101 to 128 in Geyserville.

For those wondering why the county is fixing these roads and not others in worse shape, Tom O’Kane, the county’s deputy director of transportation and public works, said the roads were picked for chip sealing because the work will extend the roads’ lifetimes and they met Caltrans’ standards for using the federal money.

Worse roads would require extensive repairs or even would have to be completely rebuilt, and his agency doesn’t have money for that, he said.

“When the stimulus money runs out, we’re done,” O’Kane said.