From I-5 North or South:
Take the NE 175th St. exit, (exit #176). Go east on NE 175th St. The Shoreline Library is on the right side of NE 175th, (on the corner of NE 175th St. and 5th Ave NE).
From Highway 520 or I-90 (Eastside):
Go west to I-5 Northbound, then follow the instructions for I-5 N.