State Highway 243 (Minnesota–Wisconsin)

State Trunk Highway 243
State Trunk Highway 243
	STH 243 highlighted in red
Route information
	Maintained by MnDOT and WisDOT
Length	1.53 mi (2.46 km)
Existed	1949–present
Major junctions
West end	MN 95 in Franconia Township, MN
East end	WIS 35 in Osceola, WI
Location
Country	United States
States	Wisconsin, Minnesota
Counties	MN Chisago; WI Polk
Highway system
	Wisconsin State Trunk Highway System; Interstate; US; State; Scenic; Rustic;
	Minnesota Trunk Highway System; Interstate; US; State; Legislative; Scenic;

Trunk Highway 243 and State Trunk Highway 243 (MN 243, WIS 243) are two short state highways in the U.S. states of Minnesota and Wisconsin. They connect MN 95 in Franconia Township, Minnesota with WIS 35 in Osceola, Wisconsin. The two highways meet at the state line on a bridge across St. Croix River. The combined highway is 1.53 miles (2.46 km) in length, 1.23 miles (1.98 km) in Minnesota and 0.30 miles (0.48 km) in Wisconsin. The two highways were designated in 1949. The bridge across the St. Croix River dates to 1953.