MP: .51 Location: 228th St SE and SR 9, Snohomish Cty 1/2 mile to SR 522 and the southern terminus of SR 9   MP: 0 Location: SR 9 and SR 522, Snohomish Cty SR 9 ends at SR 522, which heads to I-405 and to Monroe     N to SR 96 W to … Continue reading State Route 9, SR 524 to SR 522