The roadways were impacted for three hours.
Motorists should expect delays as crews continue road repairs in fire-ravaged Napa County, Caltrans says.
Motorists should expect delays because of lane and highway closures, Caltrans advised.
The temporary closure is to give more space for pedestrians to properly social distance when visiting restaurants and Veterans Park.
According to a Caltrans traffic advisory, motorists should expect delays up to 15 minutes.
CALTRANS TRAFFIC ADVISORY: Construction crews will be bringing in equipment, which will limit road access.
The roadway was blocked overnight in the Angwin area, the California Highway Patrol reported.
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A downed tree hit utility lines, closing the roadway to all traffic.
Northbound SR-29 was closed because of a traffic collision, the Napa County Sheriff's Office said.
The boy was taken to Queen of the Valley Medical Center in Napa, where he died, police said.
The man's bicycle fell 15 feet into a concrete culvert as he entered his driveway, sheriff's officials said.
Investigators do not believe alcohol or drugs were contributing factors in the crash, the CHP said.
The collision closed state Highway 128 in both directions near Berryessa Knoxville Road.
A temporary modular steel bridge is being built for motorists to use while the existing SR-128 bridge is demolished and a new one is built.
California Boulevard is scheduled to be closed between Clay and Third streets for final paving, according to Caltrans.
The new segment connects Airpark and Tower roads, providing a way for drivers to avoid state Highway 29.
Road closures will be in place as a record number of runners compete along the 26.2-mile route from Calistoga to Napa.
Napa police asked motorists to avoid a section of Jefferson Street because of a car accident.
The fatal head-on collision involved a red Chevy Camaro and a black Infiniti, a Napa police sergeant said.
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Two people were injured in the crash south of Lake Hennessey.
Police asked motorists to avoid California Boulevard between Pueblo and Industrial Way.
Conn Creek Road/SR-128 will be closed, and one-way traffic control will be in effect on Silverado Trail, according to Caltrans.
The roundabout at First Street and SR-29 was not expected to be done until spring 2020 but Caltrans announced this week it was set to open.
"Local residents will be escorted through as needed and as safety allows."
TRAFFIC ADVISORY: A detour will be in place while the northbound state Highway 29 First Street offramp is closed, according to Caltrans.
Three others were injured in the crash that occurred during rainy conditions, the California Highway Patrol said.
The fatal collision closed Highway 128 in both directions, according to the California Highway Patrol.
Caltrans said detour routes will be in place until late December for construction of one of three roundabouts.
Napa County Public Works and the city of St. Helena issued traffic advisories for Tuesday for Silverado Trail.
SR-29 was closed in both directions as emergency personnel responded to the solo-vehicle crash at Zinfandel Lane.
The fatal solo-vehicle crash happened south of the Markley Cove resort at Lake Berryessa.
A power pole was severed in a solo-vehicle crash on Silverado Trail, according to the California Highway Patrol.
The victim, a Pennsylvania man, had blunt force injuries consistent with a vehicle collision, authorities said.
The CHP said one person suffered major injuries in the collision north of Yountville.
A 21-year-old woman crashed a friend's Porsche near Silverado Country Club, killing her 18-year-old sister. DUI is suspected, the CHP said.
Caltrans is working to repair the traffic light, a process that will take about a week.
The closure began this week and is expected to continue through Aug. 30, according to Caltrans.
"It is recommended that motorists seek alternate routes during construction or allow more time for travel," county officials said.