US Army Corps of Engineers
Portland District

Temporary Closures to Bonneville Lock and Bradford and Robins Islands

Bonneville Lock is currently closed to all river traffic due to an issue with the downstream lock gate.
Public access to the Bradford Island Visitor Center, and Bradford and Robins islands recreation areas, are closed due to active repairs to the navigation lock.
You can also follow us on social media at facebook.com/CorpsBonnevilleDam/https://www.facebook.com/PortlandCorps/ and twitter.com/PortlandCorps for status updates.

STATUS UPDATES

Friday, September 20, 2019
Rebar anchors have been epoxied in the drilled holes. Holes were drilled 33 inches deep. Rebar anchor installation complete.

Thursday, September 19, 2019
Drilling of holes for rebar is complete. 

Wednesday, September 18, 2019
Our crews are working around the clock drilling holes for rebar and doing necessary prep work to get the lock floor ready for the new sill block.

Monday, September 16, 2019
Saw cutting complete. Additional demo throughout the day to expose the existing reinforcement. Control of slurry runoff from rain continues to be an on-going effort.

Friday, September 13, 2019
Continued drilling through concrete. 

Thursday, September 12, 2019
Demolition and clean-up of the sill complete. 
Drilling through concrete begins.

Wednesday, September 11, 2019
The Corps has awarded an emergency repair contract to begin construction on the sill. 
The Bonneville navigation lock will "return to service" on Sept. 30, beginning at 10 a.m. 

Tuesday, September 10, 2019
Demolition of the concrete sill continues. After demolition is complete, crews will begin clean-up efforts of sill rubble and assess conditions. 

Monday, September 9, 2019
Demolition of the damaged concrete sill at the downstream end of the navigation lock is now underway. Once demo and cleanup are finished, engineers and experts will inspect the gate foundation to assess its condition and move forward with repairs.

Sunday, September 8, 2019
The Corps team determined that the concrete sill under the downstream gate is the cause of the issue.
We've started demolition of the damaged sill, which is expected to be completed Tuesday.
After cleanup of the demolition debris, we can begin the repairs necessary to restore the lock to operation.

Saturday, September 7, 2019
Engineers and experts drained and inspected the lock to assess the needed repairs. Corps contractors are preparing to repair the lock.

Friday, September 6, 2019
Engineers determined the lock had a leak, and Portland District issued a contract to inspect and repair the lock.

Thursday, September 5, 2019
Lock operators observed issues closing the lock gate and determined that continued operation posed risks of further damage.

••• Bonneville Lock, Bradford Island Visitor Center and Bradford and Robins islands recreation areas remain closed.•••
••• The Washington Shore Visitor Center and Tanner Creek recreation area are unaffected and open during normal operating hours.•••