Sound Transit announced it opened 62 extra park-and-ride spaces this week on the roof of the SeaTac Center Garage, about two blocks from the Tukwila International Boulevard Station.
The entrance is off South 154th Street, just west of the light-rail station that flanks Highway 99.
The 600 spaces in the transit parking lot usually fill before 9 a.m. Many commuters park on residential side streets. The new off-site spaces are for transit riders only, weekdays from 4:30 a.m. to 6:30 p.m.
Sound Transit is paying the city of SeaTac $4,410 per month to lease the space, said spokesman Bruce Gray. If the spaces are filled, this translates to about a $3.40 subsidy per parked car.