Location: Main St and Cimarron Ave, Boise City Reassurance shield after the roundabout as the four routes join. Location: US-56 and US-287, Cimarron Cty As we head out of Boise City, we’ll approach the US-287 bypass. Location: US-56 and US-287, Cimarron Cty Exit right for 287 south. Stay straight for 287 north. Location: US-56 and … Continue reading Oklahoma State Highway 3, US-56/US-64/US-385/US-412/OK-325 to US-287