Minnesota State Highway 70

Minnesota State Highway 70 (MN 70) is a 29.333-mile-long (47.207 km) highway in east-central Minnesota, which runs from its intersection with State Highway 65 in Brunswick and continues east to its eastern terminus at the Wisconsin state line (near Grantsburg, WI), where it becomes Wisconsin Highway 70 upon crossing the St. Croix River.

Trunk Highway 70
MN 70 highlighted in red
Route information
Maintained by MnDOT
Length	29.333 mi[1] (47.207 km)
Existed	1933–present
Major junctions
West end	MN 65 at Brunswick
Major intersections	MN 107 near Grasston I-35 at Rock Creek
East end	WIS 70 at the St. Croix River, near Grantsburg, WI
Location
Country	United States
State	Minnesota
Counties	Kanabec, Pine
Highway system
Minnesota Trunk Highway System Interstate US State Legislative Scenic
← US 69 → US 71

Route description

Highway 70 serves as an east–west route between Mora, Brunswick, Rock Creek, and Grantsburg, WI.

The route has an interchange with Interstate 35 at the city of Rock Creek.

Highway 70 in Minnesota is a narrow roadway. The connecting route in Wisconsin, Wisconsin Highway 70, is a wide roadway with large shoulders. Highway 70 in Minnesota carries a great amount of recreational traffic to Wisconsin, as Twin Cities residents try to avoid nearby U.S. Highway 8, which is often a traffic congested route.

History

The route in Minnesota was numbered to correspond with Wisconsin Highway 70.^[2]

Minnesota 70 was authorized east of State Highway 107 (at Grasston / Braham) to the Wisconsin state line in 1933.^[2]

The portion of Highway 70 between State Highway 65 (at Brunswick) and State Highway 107 (at Grasston) was part of the original route of Highway 65 until c. 1942 when the current short-cut of Highway 65 was built.^[2]

Highway 70 in Minnesota was completely paved c. 1949.^[2]

Major intersections

County	Location	mi[1][3]	km	Destinations	Notes
Kanabec	Brunswick Township	0.000	0.000	MN 65 / CSAH 47 – Cambridge, Mora
		7.248	11.665	MN 107 north to MN 23	West end of MN 107 concurrency
	Grass Lake Township	10.446	16.811	MN 107 south / CSAH 41 – Braham	East end of MN 107 concurrency
Pine	Rock Creek	18.668– 18.800	30.043– 30.256	I-35 – Duluth, Saint Paul, Minneapolis	Interchange
		19.841	31.931	CSAH 61 / Old US 61 / Truck MN 70 west	Former MN 361
		20.685	33.289	CSAH 70 / Truck MN 70 east
		22.048	35.483	CSAH 4 / CR 106	Old Point Douglas to Superior Military Road
St. Croix River		29.398	47.311	Wisconsin state line
				WIS 70 east – Grantsburg	Continuation into Wisconsin
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus