After the tunnel was excavated and lined, 72-inch diameter steel pipe was installed. The tunnel was then backfilled with concrete to hold the pipelines in place. Excavation of the Bypass Tunnel was complete in January 2000. It was finished in January 2000, and tie-in to the existing distribution line has now been completed. This structure houses the piping that connects to the Toyon Tanks to each other and the rest of the system.
Huge control valves that direct water into and out of the tanks.
A 70-foot high concrete wall surrounds the structure. The Weid Tunnel is the existing feeder tunnel providing water from the Los Angeles Reservoir to the Hollywood Reservoirs. The Weid Tunnel connects to the new Bypass Tunnel, where it is directed north to the Toyon Tanks, or south into the distribution system. The structure at this site regulates water pressure between the storage tanks and the distribution system.