Manitoba Highway 3

Provincial Trunk Highway 3
Provincial Trunk Highway 3
Boundary Commission Trail
Route information
	Maintained by Department of Infrastructure
Length	396.1 km (246.1 mi)
Existed	1928–present
Major junctions
West end	Highway 18 at Saskatchewan border near Pierson
	PTH 83 at Melita; PTH 21 near Deloraine; PTH 10 near Boissevain; PTH 5 at Cartwright; PTH 34 near Pilot Mound and Crystal City; PTH 14 between Morden and Winkler; PTH 23 near Roland; PTH 13 at Carman; PTH 2 at Oak Bluff; PTH 100 (TCH) at Oak Bluff;
East end	Route 155 at Winnipeg city limits
Location
Country	Canada
Province	Manitoba
Rural municipalities	Boissevain-Morton, Brenda-Waskada, Cartwright-Roblin, Deloraine-Winchester, Dufferin, Killarney-Turtle Mountain, Louise, Macdonald, Pembina, Roland, Stanley, Two Borders
Major cities	Morden, Winnipeg
Towns	Carman, Melita
Highway system
	Provincial highways in Manitoba; Winnipeg City Routes;

Provincial Trunk Highway 3 (PTH 3) is a major provincial highway located in the Canadian province of Manitoba. It runs from the Saskatchewan boundary (where it meets Highway 18) to the southwest city limits of Winnipeg, where it continues as Winnipeg Route 155 (McGillivray Boulevard). Prior before to the implementation of Winnipeg's City Route System, it extended to Pembina Highway.

West of its junction of PTH 14, PTH 3 is designated as the Boundary Commission Trail, commemorating the historic red river cart trail which connected western communities to the North-Western Territory and to British Columbia.