State Trunk Highway 178
WIS 178 highlighted in red
Route information
Maintained by WisDOT
Length	23.3 mi[1][self-published source?] (37.5 km)
Existed	1947[2][1]–present
Major junctions
South end	WIS 29 on Lake Hallie–Chippewa Falls line
North end	WIS 64 in Cornell
Location
Country	United States
State	Wisconsin
Counties	Chippewa
Highway system
Wisconsin State Trunk Highway System Interstate US State Scenic Rustic
← WIS 177 → WIS 179

State Trunk Highway 178 (often called Highway 178, STH-178 or WIS 178) is a 23.3-mile (37.5 km) state highway in Chippewa County, Wisconsin, United States, that runs north–south roughly along the Chippewa River from Chippewa Falls to Cornell.

Route description

From Lake Hallie to Cornell, WIS 178 entirely follows the west bank of the river.

WIS 178 begins at a WIS 29/WIS 29 Bus. at a diamond interchange. It begins as a four-lane divided roadway. It then curves north in the shape of a hook. It then meanders northward. After intersecting CTH-S at the city limit, WIS 178 downgrades into a two-lane undivided roadway. It still continues to meander northward. Eventually, WIS 178 ends at WIS 64 in Cornell.^[3]

History

Before the creation of WIS 178, CTH-I used to follow most of present-day WIS 178.^[4] In 1947, WIS 178 was formed.^[2] WIS 178 previously began in Chippewa Falls at WIS 124.^[5] In 2006 it was rerouted east of the city along Seymour Cray Sr. Boulevard to WIS 29.^[1]

Major intersections

The entire route is in Chippewa County.

Location	mi[1]	km	Destinations	Notes
Lake Hallie–Chippewa Falls line	0.00	0.00	WIS 29 – Lake Wissota, Cadott, Wausau, Green Bay, I-94, Menomonie Bus. WIS 29 west – Town of Wheaton, WIS 29	Roadway continues as Bus. WIS 29 beyond southern terminus; diamond interchange
Cornell	30.42	48.96	WIS 64 (South Riverside Drive) – Gilman, Medford, Merrill, Bloomer	Northern terminus; Y intersection
1.000 mi = 1.609 km; 1.000 km = 0.621 mi