The highway descends the eastern slope of the Bighorn Mountains between Burgess Junction and Dayton.US 14A winds through the northern part of the scenic Black Hills taking travelers from Sturgis to Spearfish.The Laura Ingalls Wilder Historic Highway incorporates US 14 from De Smet in the west to Rochester, Minnesota, in the east.It goes east through several small towns such as Balaton, Tracy, Revere, Lamberton, Sanborn, and Sleepy Eye, on a two-lane road until New Ulm, where it is briefly a divided highway.This section is part of the Laura Ingalls Wilder Historic Highway as it passes through Walnut Grove.US 14 was extended to a full, limited-access freeway from approximately three miles (4.8 km) west of Janesville to I-35 at Owatonna.The expansion was opened to traffic on August 31, 2012, creating a continuous four-lane route from North Mankato to Owatonna.In the state of Illinois, US 14 runs southeast from north of Harvard to Chicago via Woodstock and the northwest suburbs.Continuing southeastward from just after the overpass above IL 31, US 14 passes beneath and then closely parallels the tracks of the Union Pacific Railroad's Harvard Subdivision.
The La Crosse West Channel Bridge carrying US 14, US 61,
MN 16
, and
State Trunk Highway 16
across the Mississippi River between La Crescent, Minnesota, and La Crosse, Wisconsin. This is the river's West Channel.
Newly widended US Highway 14 at Courtland traveling East Bound