State Trunk Highway 16 (often called Highway 16, STH-16 or WIS 16) is a Wisconsin state highway running from Pewaukee across the state to La Crosse. Much of its route in the state parallels the former mainline of the Milwaukee Road and current mainline of the Canadian Pacific Railway. Interstate 90 (I-90) or I-94 parallels Highway 16 for most of its length in the state. It serves local traffic in nearby cities including La Crosse, Tomah, Wisconsin Dells, Portage, Columbus, Watertown, Oconomowoc and Waukesha. The highway is mainly two-lane surface road or urban multi-lane expressway from La Crosse to Oconomowoc, and it is a freeway east of Oconomowoc. Route description WIS 16 enters from Minnesota via a connection with Trunk Highway 16 on the Mississippi River, running concurrently with US Highway 14 (US 14) and US 61. After the two US Highways turn south to follow 3rd Street in downtown La Crosse, WIS 16 passes through La Crosse via Cass Street, 7th Street and La Crosse Street, crossing WIS 35 at La Crosse Street and Lang Drive. WIS 16 passes the northern edge of the University of Wisconsin–La Crosse campus, then turns north at Losey Boulevard. The route then turns northeastward and junctions with I-90 northeast of the city. WIS 16 becomes a parallel route to I-90 and passes through West Salem where it connects with WIS 108. Wisconsin Highway 162 junctions just north of Bangor. WIS 16 crosses into Monroe County in Rockland. WIS 16 enters Sparta and junctions with WIS 21, WIS 27, and WIS 71. WIS 16 provides access to the Elroy-Sparta State Bike Trail. The route then follows I-90 very closely as a frontage road to Tomah where it junctions with WIS 131 and joins US 12. The highways continue paralleling I-90 and I-94 southeast and pass through Oakdale and into Juneau County. WIS 16 and US 12 pass through Camp Douglas and cross WIS 80 in New Lisbon. The highways then junction with WIS 58 and WIS 82 in Mauston as they continue southeast. The routes slowly trek eastward and pass through Lyndon Station where Rocky Arbor State Park is located. The highways turn southeast again and crossing the Interstates and into Sauk County and Wisconsin Dells. WIS 16 turns east off of US 12 onto WIS 13 north and passes through downtown Wisconsin Dells and into Columbia County. WIS 23 East also joins the