There will be a detour in both directions of I-90 Monday night between Argonne and Pines.

WSDOT is using some cranes to install another reader board above the freeway, and so the section of freeway between Argonne and Pines will be closed from 1 a.m. to 2 a.m.

You will need to get off at either Pines or Argonne and follow the detour signs.

The freeway should be closed for about an hour.