Drivers on southbound I-405 will have to take a detour this weekend due to a closure near Renton.

The southbound I-405 closure will be from N. Southport Drive/ Sunset Boulevard NE to State Route 167 starting at 11:59 p.m. Friday, Sept. 26, and lasting until 4 a.m. Monday, Sept. 29.

Crews will be excavating drainage crossings, installing median drainage, completing full pavement replacements and completing a traffic switch on southbound I-405.

Several on- and off-ramps will be closed due to the construction: southbound SR 169/SR900 on-ramp, southbound off-ramp to SR 515/Talbot Road S. (Exit 3), southbound off-ramp to southbound SR 167/Auburn/Ranier Avenue S. (Exit 2) and direct connector ramp to SR 167. The off-ramp to SR 169/SR 900 (Exit 4) will remain open.

The detour will take driver

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