State Trunk Highway 70 (often called Highway 70, STH-70 or WIS 70) is a
state highway
A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either Route number, numbered or maintained by a sub-national state or province. A road numbered ...
in the U.S. state of
Wisconsin
Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig ...
. It runs east–west in northern Wisconsin from a shared terminus with
WIS 101 at
US Highway 2 (US 2) and
US 141 near
Florence
Florence ( ; ) is the capital city of the Italy, Italian region of Tuscany. It is also the most populated city in Tuscany, with 362,353 inhabitants, and 989,460 in Metropolitan City of Florence, its metropolitan province as of 2025.
Florence ...
to a connection with
Minnesota State Highway 70 (MN 70) at the
St. Croix River west of
Grantsburg in
Burnett County. It serves the communities of
Grantsburg,
Siren,
Spooner, and the resort areas of
Minocqua,
Woodruff and
Eagle River along its route. WIS 70 is the third-most northern route to almost completely cross
Wisconsin
Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig ...
(after US 2 and
WIS 77), stretching from Minnesota to within of the
Michigan
Michigan ( ) is a peninsular U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest, Upper Midwestern United States. It shares water and land boundaries with Minnesota to the northwest, Wisconsin to the west, ...
border.
Route description
The highway begins at a bridge over the
St. Croix River as a continuation of
MN 70, running east from it. At
Grantsburg, the highway intersects
WIS 87/
WIS 48. The highway continues east from there, curving slightly south to avoid
Mud Hen Lake before running northeast to meet
WIS 35 in
Siren. It then
runs concurrently with WIS 35, running north from Siren before leaving the concurrency at a
roundabout
A roundabout, a rotary and a traffic circle are types of circular intersection or junction in which road traffic is permitted to flow in one direction around a central island, and priority is typically given to traffic already in the junct ...
. The highway then runs east, passing through intersections with County Trunk Highway X (CTH-X), CTH-H, and CTH-O. It then passes through an intersection with
US 63 in
Spooner and an interchange with
US 53 east of Spooner.
[
]
The highway then continues running east before curving north through Stone Lake to reach WIS 27, with which the highway runs concurrently. It then passes through the Lac Courte Oreilles Reservation, where the highway starts following the Couderay River, and the village of Couderay before reaching WIS 40 in Radisson, where it starts following the Crooked Rapids, and the end of the WIS 27 concurrency in Ojibwa
The Ojibwe (; syll.: ᐅᒋᐺ; plural: ''Ojibweg'' ᐅᒋᐺᒃ) are an Anishinaabe people whose homeland (''Ojibwewaki'' ᐅᒋᐺᐘᑭ) covers much of the Great Lakes region and the northern plains, extending into the subarctic and thro ...
, where it stops following the Crooked Rapids. The highway then curves north, intersecting with CTH-B, CTH-GG, and CTH-M south of the Chequamegon-Nicolet National Forest. It then intersects with WIS 13 before entering the Riley Lake Wildlife Management Area, where the highway runs before exiting it and running east and concurrently with US 51 in Woodruff.[ In 2014, the ]average annual daily traffic
Annual average daily traffic (AADT) is a measure used primarily in transportation planning, transport engineering, transportation engineering and retail Location_intelligence, location selection. Traditionally, it is the total volume of vehicle tr ...
on the highway west of US 51 was 4776, down from 5168 in 2008.
In Woodruff, the highway intersects WIS 47 and leaves the US 51 concurrency in Arbor Vitae, Wisconsin. It then runs east, intersecting with WIS 155 before following the Wisconsin River
The Wisconsin River is the longest river in the U.S. state of Wisconsin, at approximately 430 miles (692 km) long. As a tributary of the Mississippi River, it is part of the Mississippi River System. The river's name was first recorded in 1673 b ...
to Eagle River, where it runs concurrently with US 45. It then enters the Headwaters Wilderness, intersecting WIS 55 and running concurrently with WIS 139 within it. After exiting the wilderness, the highway continues east, intersecting and running concurrently with WIS 101 before terminating at US 2 in Florence
Florence ( ; ) is the capital city of the Italy, Italian region of Tuscany. It is also the most populated city in Tuscany, with 362,353 inhabitants, and 989,460 in Metropolitan City of Florence, its metropolitan province as of 2025.
Florence ...
.[
]
History
In 1914, much of the current route was unbuilt, though a section between Woodruff and Eagle River and a section east of Grantsburg had been constructed. In 1917, a short stub connecting WIS 35 to Grantsburg was assumed and designated as WIS 70. By the early 1920s, the highway had been extended east to WIS 32 (by 1935 part of US 45[) in Eagle River.] Throughout the 1920s and into the 1930s, the highway was the same and continued to be unpaved along the entire route. In 1931, the highway was extended west to a toll bridge over the St. Croix River. In 1934, a section of the highway northeast of Eagle River was designated. In 1935, the highway was paved in some sections. Between 1948 and 1956, the highway was extended east to Florence and the original section northeast of Eagle River had been redesignated as part of WIS 17.
Major intersections
See also
*
References
External links
*{{Commons category-inline, Wisconsin Highway 70
070
Transportation in Burnett County, Wisconsin
Transportation in Washburn County, Wisconsin
Transportation in Sawyer County, Wisconsin
Transportation in Price County, Wisconsin
Transportation in Oneida County, Wisconsin
Transportation in Vilas County, Wisconsin
Transportation in Forest County, Wisconsin
Transportation in Florence County, Wisconsin