California Highway Patrol officers have closed two lanes of westbound Interstate 8 through El Cajon because of a hole in the road.
The hole, described as four feet by three feet, appears to be degraded concrete.
Caltrans workers say water may have gotten underneath a temporary patch placed to repair a hole and the pressure from cars caused it to crumble. A permanent repair was planned to take place in the next couple weeks.
Crews were called out to patch the hole. The far two right lanes of I-8 from Johnson to Main are being blocked off and may be closed for four hours. Crews hope to have work finished by the start of the evening commute.
The concrete didn't land on any cars on the street below the bridge.
