A portion of Chanate Road will close on Wednesday causing motorists to detour on east Santa Rosa streets leading to the Sonoma County government complex.

Contractor R.E. West Builders said it is closing westbound traffic on Chanate Road at Humboldt Street Wednesday morning for road maintenance. Chanate Road will remain closed between Lomitas Avenue and Mendocino Avenue between 5:30 a.m. and 7:30 p.m.

The road will be open for commuters between 7:30 a.m. and 8:30 a.m., and again from 4 p.m. and 6 p.m. During the closure, traffic will detour on Humboldt Street and Lewis Road.