MP: .81S Location: Hamilton Blvd and Trent Ave, Spokane That milepost is not entirely accurate. Sometime in 2006 SR 290 from US 2 to I-90 was decommissioned and SR 290 was moved along former SR 290 SPUR which is the stretch from I-90 to Trent Ave. Anyway, turn right for SR 290 MP: .77 Location: … Continue reading State Route 290, I-90 to SR 27