US Army Corps of Engineers
Walla Walla District

News Releases by Month

June 2019 (10)
May 2019 (21)
April 2019 (18)
March 2019 (8)
February 2019 (13)
January 2019 (6)
December 2018 (4)
November 2018 (5)
October 2018 (7)
September 2018 (15)
August 2018 (18)
July 2018 (15)
June 2018 (13)
May 2018 (14)
April 2018 (10)
March 2018 (10)
February 2018 (14)
January 2018 (4)
December 2017 (4)
November 2017 (8)
October 2017 (4)
September 2017 (10)
August 2017 (14)
July 2017 (5)
June 2017 (9)
May 2017 (15)
April 2017 (12)
March 2017 (26)
February 2017 (6)
January 2017 (12)
December 2016 (12)
November 2016 (6)
October 2016 (6)
September 2016 (8)
August 2016 (9)
July 2016 (8)
June 2016 (16)
May 2016 (10)
April 2016 (8)
March 2016 (7)
February 2016 (6)
January 2016 (1)
December 2015 (1)
November 2015 (5)
October 2015 (5)
September 2015 (12)
August 2015 (8)
July 2015 (6)
June 2015 (8)
May 2015 (5)
April 2015 (4)
March 2015 (9)
February 2015 (8)
January 2015 (7)
December 2014 (4)
November 2014 (11)
October 2014 (5)
September 2014 (12)
August 2014 (10)
July 2014 (9)
June 2014 (6)
May 2014 (12)
April 2014 (6)
March 2014 (10)
February 2014 (9)
January 2014 (3)
December 2013 (3)
November 2013 (4)
October 2013 (6)
September 2013 (7)
August 2013 (5)
July 2013 (8)
June 2013 (4)
May 2013 (13)
April 2013 (5)
March 2013 (8)
February 2013 (9)
January 2013 (5)
December 2012 (6)
November 2012 (8)
October 2012 (7)
September 2012 (8)
August 2012 (6)
July 2012 (8)
June 2012 (14)
May 2012 (16)
April 2012 (13)
March 2012 (12)
February 2012 (8)
January 2012 (3)
December 2011 (6)
November 2011 (7)
October 2011 (13)
September 2011 (14)
August 2011 (11)
July 2011 (11)
June 2011 (35)
May 2011 (21)
April 2011 (11)
March 2011 (9)
February 2011 (20)
January 2011 (7)

17-024 Corps reassesses navigation lock work progress at Little Goose; return-to-service date delayed at least a week

Published March 9, 2017
WALLA WALLA, Wash. – Due to a combination of factors, contracted work in-progress at Little Goose Dam’s navigation lock will require more time to complete than previously scheduled, U.S. Army Corps of Engineers officials in the Walla Walla District announced, today.

The Corps recently reassessed work progress at Little Goose Lock and Dam and determined at least an additional week will be necessary to return the lock to service. The lock, was placed out of service Dec. 12, 2016, as part of a coordinated system-wide maintenance outage, and originally scheduled to reopen on March 20. The District intends to provide more fidelity on a specific return-to-service date on Tuesday, March 14, and will continue to provide updates as the contractor work progresses.

The main contributing factors to the delay in schedule include: 1) difficulty removing an existing pin on the operating cylinder and jacking system placement in early-January; 2) extreme winter weather conditions for multiple weeks impacted on-site contractor work efficiency; and 3) post-welding cracks appeared on gate structural members, requiring additional weld repairs.

Despite the prime contractor (Dix Corporation, of Spokane, Washington) implementing and sustaining a two-shift work week in early-January, and the Corps de-scoping noncritical repairs from the contract to gain time on the schedule, the contractor has been unable to recover from the delays. The contractor reassessed their schedule March 1, and notified the Corps they would not be able to return the navigation lock to service on March 20.

“We realize commercial navigation lock users need as early a decision as possible on changes to the outage schedule to adjust their own plans. We will continue to keep our stakeholders informed,” said Walla Walla District Commander Lt. Col. Damon Delarosa. “We understand the vital importance of the Columbia and Snake Rivers to the economy of the Pacific Northwest, and want to return all locks to service as safely and as quickly as possible.”

The Corps will continue to communicate and coordinate with the Columbia Snake River System users and stakeholders on the outage and the impacts of this additional time requirement.

“We understand and deeply regret the impact to our navigation stakeholders caused by this schedule change,” said Corps Project Manager Jason Williams. “The Corps has been partnering with our contractors at every level from the chief executives to on-site key personnel to identify and implement every possible method to minimize the delay.”

Navigation lock work at Little Goose involves major repairs to its downstream gate, including replacement of a gudgeon arm and linkage, replacement of the pintle assembly for both gate leafs, resurfacing the quoin and miter, and crack repairs to structural members. Repairs are critical to ensure safe and reliable gate operations.

The Corps’ 2016-2017 Columbia/Snake River system extended navigation lock maintenance outage began Dec.12, 2016. The 14-week-long closure affects all Corps navigation locks on the Columbia and Snake rivers, during which time critical, non-routine repairs and maintenance, plus routine maintenance and scheduled improvements are being conducted. Bonneville Lock and Dam reopened on February 9, as scheduled. The Dalles, John Day, McNary, Ice Harbor, Lower Monumental, and Lower Granite locks and dams remain scheduled to return to service on March 20.

For more information about the 2016-2017 Columbia-Snake Rivers Extended Navigation Lock Outage, visit the Corps’ webpage http://www.nww.usace.army.mil/Missions/Navigation/FY17LockOutage.aspx.
-30-

Contact
Public Affairs Office
509-527-7018
cenww-pa@usace.army.mil

Release no. 17-024