City Trunkline Resumes Normal Function 

LOS ANGELES – The Los Angeles Department of Water and Power (LADWP) confirms the water main under Coldwater Canyon Avenue just south of Ventura Boulevard has been restored to full service as of 3:00 p.m. today.  LADWP crews have worked around the clock since the main ruptured late Saturday night: first to stop the release of water, then to stabilize the area, followed by repairs to the massive cast iron line and ultimately conducting testing for pressure and water quality, in order to put the line into service this afternoon.  Throughout this process, no customers were without water service due to the trunkline rupture or any of the subsequent repairs.  Additionally, there were no adverse impacts to the Department’s high level of water quality related to the rupture.

The main is part of the City Trunkline, one of the largest lines in the LADWP Water System.  The City Trunkline is used to move water between the Los Angeles Reservoir and the Franklin Reservoir.

With the main back in service, LADWP crews will begin backfilling the street blowout with compacted sand and crushed rock to create the ideal compaction necessary for street repairs to begin.  This process will require up to two days to complete, at which point the Los Angeles Bureau of Street Services will begin repaving work.

Currently it is not possible to estimate when street repair work will be complete.  As such, Coldwater Canyon Avenue will remain closed.  The media and public will be updated as work continues and a better estimate of completion is known.

Information for Affected Residents and Businesses
A public information site staffed by LADWP claims personnel, as well as a representative from LADOT, will be open today until 7:00 p.m. at the southeast corner of Coldwater Canyon Avenue and Ventura Boulevard.  Area residents, businesses and those impacted by the trunkline rupture are encouraged to visit and receive information on repair work, local traffic impacts and claims forms.  The site will open again Wednesday morning at 9:00 a.m. and remain open until 7:00 p.m.  Anyone seeking additional information, including claims forms, can visit or call the Department toll-free at 1-800-DIAL DWP and ask to be routed to claims personnel.

Coldwater Canyon Avenue Bridge
The Los Angeles Department of Public Works Bureau of Engineering has determined the soil supporting the southern approach to the Coldwater Canyon Avenue bridge over the Los Angeles River was eroded during the trunkline rupture, undermining the pavement, retaining walls, and sidewalks at the south end.  The bridge is currently closed to traffic and will remain closed while plans are made for the necessary repairs to the affected areas.

Coldwater Canyon Avenue Traffic Detour Information For Wednesday, September 9:
All area commuters should avoid using Coldwater Canyon Avenue, between Mulholland Drive and Ventura Boulevard due to Coldwater Canyon Avenue closure between Halkirk Street and Ventura Boulevard in both directions.  Coldwater Canyon Avenue is also closed between Moorpark Street and Ventura Boulevard.

Detour signs are posted prominently and traffic officers will be posted at the following intersections on Wednesday from 6:00 AM to 9:00 AM and from 4:00 PM to 7:00 PM:

Moorpark Street and Coldwater Canyon Avenue
Ventura Boulevard and Coldwater Canyon Avenue
Ventura Boulevard and Alcove Avenue
Halkirk Street and Coldwater Canyon Avenue

For local traffic conditions residents and commuters can check real-time traffic information at

Media can call the LADOT 24-hour Communications Center at 213 485-4184 and speak with an operator.

Up-to-date news and information can be found online at and at


Brooks Baker
LADWP Public Affairs