 WYO 258 heads south and crosses the North Platte River before intersecting W. 13th Street, which also provides access to Fort Casper.Continuing south, WYO 258 passes along the western side of the Central Wyoming Fair Grounds and briefly parallels the North Platte River a short distance before intersecting Wyoming Highway 220 (CY Aveune), the main artery for traffic coming into Casper from the west.Past WYO 220, Highway 258 gradually turns eastward before reaching the southern terminus of Wyoming Highway 252 (S. Poplar Street).