County State-Aid Highway 42 (Minnesota)

County Road 42
CR 42 highlighted in red
Route information
Length	33.347 mi[1] (53.667 km)
Tourist routes	Great River Road
Major junctions
West end	CSAH 17 in Shakopee
Major intersections	MN 13 in Savage I-35W in Burnsville I-35E in Burnsville CSAH 23 in Apple Valley MN 3 in Rosemount US 52 in Rosemount MN 55 near Rosemount
East end	US 61 in Hastings
Location
Country	United States
State	Minnesota
Counties	Dakota and Scott
Highway system
County roads of Minnesota

County State-Aid Highway 42 (CSAH 42), usually called County Road 42 (CR 42), is a 33.347-mile-long (53.667 km) county highway in Dakota and Scott counties in the southeastern part of the U.S. state of Minnesota. It is a primary arterial highway in the two counties. These two counties form the southernmost portion of the 13-county Twin Cities metropolitan area, although CSAH 42 travels across the northern reaches of the two counties.

County Road 42 serves as an east–west arterial route for the South of the River suburbs of the Minneapolis – Saint Paul area. The roadway connects the communities of Shakopee, Prior Lake, Savage, Burnsville, Apple Valley, Rosemount, and Hastings; which are all located south of the Minnesota River.

From west to east, the route follows 140th Street, Egan Drive, 150th Street and 145th Street. Its westernmost terminus is at Shakopee in Scott County, where it intersects County Road 17 (Marschall Road). The eastern terminus of County 42 is at Hastings in Dakota County, where it meets U.S. Highway 61.

County 42 is designated as a principal arterial highway by the Metropolitan Council, and the roadway is supposed to have limited commercial access and traffic signals only at one-half mile intervals. However, because it was used as a primary commercial road before its designation as a principal arterial highway, it passes directly through the downtown areas of several cities in Scott and Dakota Counties; most notably Burnsville and Apple Valley in Dakota County

Most of County Road 42 is designated as part of the National Highway System. The major highways it intersects from west to east are: State Highway 13, Interstate 35W, Interstate 35E, Cedar Avenue two miles (3 km) south of the terminus of State Highway 77, State Highway 3, U.S. 52, State Highway 55, and U.S. 61.

County Road 42 was authorized and paved during the 1960s.

In July 2007, construction began to widen County Road 42 to six lanes from Glendale Road in Savage to County Road 5 in Burnsville. Also, the old traffic signals between Glendale Road and County Road 5, were replaced with new ones. The project was completed by summer 2008.

A proposed reconstruction project at the interchange with U.S. Highway 52 in Rosemount, will reconstruct the interchange to a cloverleaf interchange.^[2] The purpose of the project is to provide movement between the north and the east with the closure of the nearby US 52 / MN 55 interchange. Phase 1 of construction will start in 2017, with widening of County Road 42 to 4 lanes, including turn lanes and replacement of Highway 52 bridges.^[3]

County	Location	mi[1]	km	Destinations	Notes
Scott	Shakopee	0.000	0.000	CSAH 17 (Marschall Road)	Western terminus
	Prior Lake	1.542	2.482	CSAH 83 (Canterbury Road South)
		3.039	4.891	CSAH 21 (Eagle Creek Avenue Northeast)
		4.518	7.271	CSAH 18 (Crest Avenue Northeast)
	Savage	5.973	9.613	MN 13
		6.996	11.259	CSAH 27 (Dakota Avenue South)
Dakota	Burnsville	9.711	15.628	CSAH 5
		10.744	17.291	I-35W
		11.105	17.872	I-35E
		12.151	19.555	CR 11
	Apple Valley	14.360	23.110	CSAH 23 (Cedar Avenue)	To MN 77
		14.790	23.802	Galaxie Avenue West
		16.296	26.226	CSAH 31 (Pilot Knob Road)
	Rosemount	18.720	30.127	MN 3
		23.524	37.858	US 52	Interchange
		27.631	44.468	MN 55 west / Great River Road (National Route)	Western end of MN 55 and Great River Road overlap
	Nininger Township			MN 55 east / CSAH 85 south	Eastern end of MN 55 overlap
	Hastings	33.347	53.667	To US 61 / Great River Road (National Route)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi