Water shot about 100 feet into the air at about 3 p.m. Saturday after a water main apparently broke along southbound Highway 29 and Devlin Road in south Napa County.
For about an hour, vehicles slowed as drivers snapped photos of the jet that shot water and dirt into the air as public works employees for the city of Napa tried to slowly shut down valves.
The cause of the break was not immediately known.
David Megarry and Robert Zimmerman, two tow truck drivers assigned to the California Highway Patrol’s Freeway Service Patrol, helped direct traffic as CHP officers and CalFire/Napa County firefighters also responded.
Water services were not expected to be disrupted for most, a public works employee said at the site.