Traffic on Barbur Boulevard will be a mess all weekend with the closure of both north and south lanes of I-5.

Starting Friday night, all lanes of Interstate 5 will close in both directions between Terwilliger Boulevard and the Capitol Highway exit through Monday morning.

The closure will begin at 9 p.m. Friday, June 28, and continue all hours and days through the weekend, reopening by 5 a.m. Monday, July 1.

Southbound traffic will be detoured at Southwest Terwilliger Boulevard, and northbound traffic will be taken off the freeway at the OR 99W/SW Barbur Boulevard exit. Barbur Boulevard will be available to local traffic, but drivers should expect long delays and big backups.

If you are driving into or out of downtown Portland or continuing to or from Washington, you should use other freeways including Interstate 205, I-84, Oregon 217, and U.S. 26 to get around the closure.

The closure is part of the construction of a new I-5 bridge deck over Southwest 26th Avenue.

I-5 closure map in southwest Portland.

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