WSDOT announced Monday that the permanent replacement for the Interstate 5 bridge over the Skagit River will be slid into place Saturday night.

A section of the bridge collapsed on May 23 after an oversize truck struck the overhead trusses. Three vehicles ended up in the river but nobody was killed.

I-5 traffic will be detoured through Burlington and Mount Vernon between 7 p.m. Saturday and 7 a.m. Sunday. The closure could last longer depending on whether contractors run into any problems.

The detours will be at College Way and George Hopper Road and will be similar to what was in place earlier this year.

I-5 traffic had to be detoured for about three weeks after the collapse. That caused some people to simply avoid the area. Businesses took a hit as a result.

A Washington State Patrol motorcycle trooper was killed in a collision while patrolling the detour.

Two temporary spans were put into place on June 19.

Contractors on Saturday night will move those temporary spans using hydraulic jacks that slide onto Teflon pads and long steel rails. A similar method will be used to put the new 990-ton span into place.

Once the bridge back is open, the state will get to work on retrofitting the rest of the overhead bridge supports to prevent a similar collapse in the future.

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