MP: SR 542/10 Location: Lawrence Rd and Mt. Baker Hwy, Whatcom Cty Nice little dual reassurance shield. Washington always tries to make these one-pieces, and so they are very inconsistent throughout the state MP: SR 542/14.27 Location: Mt Baker Hwy and Valley Hwy, Deming SR 9 will branch off and continue its southerly route in … Continue reading State Route 9, SR 542 to SR 542