4400 88th Ave. S.E., Mercer Island, 98040
From I-90 Westbound:
Take exit # 8 towards East Mercer Way and turn left on East Mercer Way. Turn sharp right onto SE 36th Street. 36th becomes Gallagher Hill Road. Follow Gallagher up the hill until you reach the stop sign on SE 40th. Turn right onto SE 40th. Go straight two blocks until you come to the stoplight at 86th Ave SE. Turn left onto 86th. Go four blocks until you come to SE 44th. Turn left onto 44th and go two blocks. Turn right on 88th Ave SE. The library will be on your left on the corner of 44th and 88th.
From I-90 Eastbound:
Take the Island Crest Way Exit. Go straight onto Island Crest Way. This will put you traveling south and uphill. Turn left at the stoplight on SE 40th. Turn right at the stoplight on 86th. Proceed as above.