MP: 19.92 Location: O’Sullivan Dam Rd and Rd M SE, Grant Cty No reassurance shield at the beginning of the route, but there is one 5 miles in. MP: 12.54 Location: O’Sullivan Dam Rd and Highland Dr SE, Grant Cty The Potholes area is quite interesting as a large man-made lake in the middle of … Continue reading State Route 262, SR 17 to SR 26