POMEROY, Wash. – Vehicle crossings at Lower Monumental Lock and Dam will be temporarily closed March 18-20 to accommodate maintenance activities to occur on top of the dam, according to operations officials with the U.S. Army Corps of Engineers’ Walla Walla District.
The temporary closure to public traffic across the dam is necessary for public safety while maintenance staff installs turbine intake fish screens and navigation. Work involves the use of large cranes that will be set up at various locations and times along the top deck to move the screens, according to officials at the dam, located at Snake River Mile 41.6, near Kahlotus, Wash.
Travelers can call 1-888-DAM-INFO (1-888-326-4636) for the most current dam-crossing information at all three of Walla Walla District’s dams that allow public traffic to cross the Snake River: Lower Monumental; Little Goose, near Starbuck, Wash.; and Lower Granite, near Pomeroy, Wash.
Regular hours for crossing dams in the Walla Walla District are as follows:
Lower Monumental Lock and Dam – open for crossings once an hour, on the half-hour, from 7:30 a.m. to 4:30 p.m., Monday through Thursday and closed on federal holidays unless otherwise announced. Crossing times are 7:30, 8:30, 9:30, 10:30 and 11:30 in the morning, and 12:30, 1:30, 2:30, 3:30 and 4:30 in the afternoon. If approaching from the south shore, travelers can reach the security guard for crossing escort by calling #228 on the phone at south gate. Tour and school buses must contact the dam 24 hours in advance for authorization 509-282-3219/3218.
Little Goose Lock and Dam – open for crossings once an hour, on the half-hour, from 7:30 a.m. to 4:30 p.m., Monday through Thursday and closed on federal holidays unless otherwise announced. Crossing times are 7:30, 8:30, 9:30, 10:30 and 11:30 in the morning, and 12:30, 1:30, 2:30, 3:30 and 4:30 in the afternoon. Tour and school buses must contact the dam at 509-399-2233, extensions 227, 231 or 253, at least 24 hours in advance for crossing authorization.
Lower Granite Lock and Dam – crossings are allowed daily from 7 a.m. through 5 p.m., except for federal holidays unless otherwise announced. Tour and school buses must contact the dam at 509-843-1493 at least 24 hours in advance for crossing authorization.
At all three dams, passenger cars, motorcycles, open trucks, recreation vehicles, small vans and farm equipment, with the exception of fuel trucks, will be allowed to cross. Large commercial vehicles, trucks, vehicles hauling flammable or explosive cargo and vehicles that cannot be easily searched will not be allowed to cross the dams.
All vehicles crossing Corps dams are subject to a search. Photo identification is required for all vehicle occupants 18 years of age and older. All firearms must be unloaded and declared at the gate. Security guards are authorized to perform detailed vehicle searches and deny vehicle access across the dam. Drivers may not stop their vehicles to take pictures or sight see during escorted crossings. Pedestrian traffic across the dam is not allowed because of safety considerations.
Operations officials note there could still be closures. The district may, at any time, close access to traffic for extended periods of time due to operations, maintenance or construction-related activities at a dam. A change in security conditions could also terminate public access across the dam until such time as threat levels decrease. The public will be notified about closures, if possible, in advance, but the crossing is still subject to closing at any time.