The Brief LADWP crews are responding to a new water main leak in a 6-inch main on Santa Monica Boulevard in West Hollywood, causing street flooding and lane closures. Engineers have not yet determined the cause of the secondary Sunset leak, and LADWP has not established a repair timeline for Santa Monica Boulevard. Crews with the Los Angeles Department of Water and Power (LADWP) are responding to a 6-inch cast-iron water main leak on Santa Monica Boulevard in West Hollywood on Thursday morning. Eastbound lanes of Santa Monica Boulevard were closed at Laurel Avenue near Crescent Heights Boulevard to accommodate emergency repair work. What you can do:Avoid eastbound Santa Monica Boulevard near Crescent Heights Boulevard and the closed section of Sunset Boulevard between Sherbourne Drive and San Vicente Boulevard.