Just in from SDOT:

Thursday, February 5, the Seattle Department of Transportation (SDOT) will close the right lane eastbound on the West Seattle High Level Bridge from 9 a.m. to 11:30 a.m. During the two and half hour closure, a SDOT crew will inspect the sign bridge, the overhead structure on which the directional traffic signs are mounted.

Side note if you routinely drive through South Park – SDOT also has sent word that 14th/Cloverdale (map) will be closed all weekend for pavement work, 6 pm Friday till no later than 10 pm Sunday.