The California Department of Transportation (Caltrans) June 15 began major construction work on the southern end of State Route 29. State Route 29 travels in a north-south direction from State Route 20 in Upper Lake and terminates at Interstate 80, near the Al Zampa (Carquinez) bridge in Vallejo.

The asphalt paving project will begin from the separation of I-80/SR-29 through the Solano/Napa County line. Approximately 6 mi. (9.7 km), mostly within the city of Vallejo where the roadway is also known as Sonoma Boulevard, will be paved with rubberized hot mix asphalt.

Construction will be Monday through Friday, mainly at night. Start of work on each night will be between 6 and 10 p.m. Start times will vary depending on location. All construction activities will end on or before 6 a.m.

Because the existing surface will need to be ground-off before paving, Caltrans cautions that noise will be unavoidable in certain areas. However, it will be kept within approved construction noise levels. On each night, grinding will only be done in the area that will be paved.

Caltrans expects to complete the project by October, 2009. The contract was awarded to Bay Cities Paving and Grading Inc. for $2,851,650.60.