Just in from SDOT:

Overnight closures of the westbound lanes of the Spokane Street Viaduct from SR 99, previously announced for tonight, Wednesday, May 9, and tomorrow, Thursday May 10, have been cancelled.  The contractor was able to complete planned work during closures Monday and Tuesday nights. 
 
Other overnight closures of the same westbound lanes are likely next week.  Information will be released once details have been finalized.