Location: Cimarron Ave and 1st St, Boise City As 385/3 splits from US 287, we’ll approach US 56/64/412 and SH-325 at the famous courthouse roundabout. Location: Cimarron Ave and Main St, Boise City In the roundabout, keep right for certain routes. Other routes are omitted. Turn right for 325 west, stay straight for 56/64/412 west … Continue reading Oklahoma State Highway 3, US-287 to US-56/US-64/US-385/US-412/OK-325