Caltrans next week will begin a $1.2 million project on Highway 29 in Lake County that will last nearly 24 hours a day for several days with the road limited to one-way traffic, 15-minute traffic delays and slower speed limits in place.

On Tuesday, construction crews are to begin chip sealing the road, starting at the Lake County-Napa County line and heading toward their ultimate stopping point at Coyote Creek Bridge in Hidden Valley. The day crew will work 7 a.m. to 4 p.m. Tuesday through Thursday and until 2 p.m. Friday. The night crew will work 7 p.m. to 6 a.m. Tuesday through Friday morning.

Caltrans engineer Oungkar Narine, who is overseeing the project, said he expects the chip sealing work will take about six days. As a result, the night crew will resume its work Sunday, July 11, and the day crew Monday, July 12.

Narine said the work will be noisy, but he expects the crews to spend only one night passing through downtown Middletown. While the chip sealing will only take a few days, Narine said Caltrans has allowed through August for finishing work to be done, including striping the road.

The chip sealing uses a rubberized binder to provide a high-traction surface for the road, Narine said in a statement. The Highway 29 project will use 128 tons of rubber recycled from about 20,000 passenger car tires, he said.