State Trunk Highway 55 is a state highway in the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Wisconsin

Wisconsin

Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

. It runs south–north in northeast Wisconsin from a junction with US 151

U.S. Route 151

U.S. Route 151 is a U.S. Highway that runs through the states of Iowa and Wisconsin. The southern terminus for U.S. 151 is at a junction with Interstate 80 in Iowa County, Iowa, and its northern terminus is at Manitowoc, Wisconsin. The route, from south to north follows a northeasterly path through...

 approximately 1.5 miles north of Brothertown

Brothertown, Wisconsin

Brothertown is a town in Calumet County in the U.S. state of Wisconsin. The population was 1,404 at the 2000 census. The unincorporated communities of Brothertown, Charlesburg, Eckers Lakeland, Jericho, Maple Heights, and Quinney are located in the town...

 near the eastern shore of Lake Winnebago

Lake Winnebago

Lake Winnebago is a freshwater lake in eastern Wisconsin, United States. It is the largest lake entirely within the state.-Statistics:...

 in Calument County

Calumet County, Wisconsin

Calumet County is a county located in the U.S. state of Wisconsin. It is included in the Appleton, Wisconsin, Metropolitan Statistical Area. As of 2010, the county's population was 48,971. The county seat is Chilton.-History:...

 to the Michigan

Michigan

Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

 State line at the Brule River

Brule River

Brule River is a river in the U.S. states of Michigan and Wisconsin, and nearly the entire course forms a portion of the boundary between the two states.The Brule begins at Brule Lake, just inside the Michigan border, at...

 approximately one mile northeast of Nelma

Nelma, Wisconsin

Nelma is an unincorporated community in the town of Alvin, Forest County, Wisconsin, United States. Nelma is located on Wisconsin Highway 55 near the Michigan border, north of Crandon....

 in Forest County

Forest County, Wisconsin

Forest County is a county in the U.S. state of Wisconsin. As of the 2010 census, the population was 9,304. Its county seat is Crandon.-Indian Reservations:...

 where it connects to M-73

M-73 (Michigan highway)

M-73 is a north–south state trunkline highway in the Upper Peninsula of the US state of Michigan. It connects with US Highway 2 and Highway 55 at the state line near Iron River. Running through forest, the highway was first designated along with the rest of the state highway system in...

.

Along its route, STH 55 serves Kaukauna

Kaukauna, Wisconsin

Kaukauna is a city in Outagamie County, Wisconsin, United States, on the Fox River, approximately 100 miles north of Milwaukee, with a population of 12,983. It is a part of the Appleton, Wisconsin Metropolitan Statistical Area, which is included in the Appleton-Oshkosh-Neenah, Wisconsin Combined...

, Shawano

Shawano, Wisconsin

Shawano is a city in Shawano County, Wisconsin, United States. The population was 9,305 at the 2010 census. It is the county seat of Shawano County...

, the Menominee Indian Reservation

Menominee Indian Reservation

The Menominee Indian Reservation is an Indian reservation located in northeastern Wisconsin for the Menominee.For the most part it is conterminous with Menominee County and the town of Menominee. However, there are many small pockets of territory within the county that are not considered to be...

, Crandon

Crandon, Wisconsin

Crandon is a city in Forest County, Wisconsin, United States; it is in the northeastern part of the state, about north of Green Bay. The population was 1,920 at the 2010 census. It is the county seat of Forest County and is the only incorporated community in the county...

 and the Nicolet side of the Chequamegon-Nicolet National Forest

Chequamegon-Nicolet National Forest

The Chequamegon-Nicolet National Forest is a 1,530,647 acre U.S. National Forest in northern Wisconsin in the United States. Much of the old growth forest in this region was destroyed by logging in the early part of the 20th century...

.

A new roundabout was opened at the intersection of WIS 55 and US 10 between Sherwood and Kaukauna in the autumn of 2009.
Another roundabout is currently being planned at the busy intersection of WIS 55 and WIS 114 approximately one mile west of Sherwood, Wisconsin.