The first overnight closure of the Hood Canal Bridge for work on the span's  center lock system will start this weekend.

The Highway 104 bridge across the Hood Canal will be completely closed so contractor crews can start the rehabilitation of the center lock system, which keeps both halves of the floating bridge connected.

The closure schedule for the coming week is:

10 p.m. Saturday, May 13, to 10 a.m. Sunday, May 14;

11 p.m. Monday, May 15, to 4 a.m. Tuesday, May 16;

11 p.m. Tuesday, May 16, to 4 a.m. Wednesday, May 17; and 

11 p.m. Wednesday, May 17, to 4 a.m. Thursday, May 18.

State and local officials are urging residents of the Olympic Peninsula to reschedule any plans for crossing the Hood Canal Bridge during the closure periods in May and June.

Work on the span will continue later this month and also in early June.

The closure schedule for late May is:

10 p.m. Saturday, May 20, to 10 a.m. Sunday, May 21;

11 p.m. Monday, May 22, to 4 a.m. Tuesday, May 23;

11 p.m. Tuesday, May 23, to 4 a.m. Wednesday, May 24; and

11 p.m. Wednesday, May 24, to 4 a.m. Thursday, May 25.

Eight additional nighttime closures are scheduled for next month, starting June 10.

The work in May and June will focus on restoring the pyramids on the bridge that help guide the two halves of the floating bridge together. 

Officials also noted that emergency-response crossings on the bridge will not happen during the overnight closures in May and June. 

Additional work is also planned for September, starting Monday, Sept. 10, as crews will update the mechanism that securely connects both halves of the floating bridge and install new shock absorbers.