Ontario Highway 15

Highway 15
A map of Highway 15   Highway 15   Connecting Links   Highway 15 (1983–1998)
Route information
Maintained by Ministry of Transportation of Ontario
Length	114.7 km[1] (71.3 mi)
Existed	October 13, 1920[2]–present
Major junctions
South end	Highway 401 – Kingston
North end	Highway 7 – Carleton Place
Location
Country	Canada
Province	Ontario
Major cities	Kingston
Towns	Smiths Falls, Carleton Place
Highway system
Ontario provincial highways Current Former 400-series
← Highway 12 → Highway 16
Former provincial highways ←  Highway 14

King's Highway 15, commonly referred to as Highway 15, is a provincially maintained highway in the Canadian province of Ontario. It travels north from an interchange with Highway 401 in Kingston to Highway 7 in Carleton Place, a distance of 114.7 kilometres (71.3 mi). In addition to Kingston and Carleton Place, the highway provides access to the Eastern Ontario communities of Joyceville, Seeley's Bay, Morton, Elgin, Crosby, Portland, Lombardy and Franktown. Prior to 1998, Highway 15 continued north from Carleton Place, passed Almonte and through Pakenham, to Highway 17 in Arnprior.

Highway 15 was one of the original highways created by the province in 1920 to establish a highway network and qualify for funding under the Canada Highways Act. The southern terminus, originally in Seeley's Bay, was moved to Highway 2 in Kingston the following year. While the northern terminus has shifted numerous times, the southern terminus has consistently remained in Kingston since 1921. Initially, Highway 15 connected Smiths Falls with Carleton Place via Perth. The assignment of the Trans-Canada Highway during the 1950s led to a major renumbering scheme in 1961 that redirected the highway concurrent with Highway 29 via Franktown.

Although realignments and bypasses have been constructed around many of the towns along the route, it continues to serve as a major corridor between Kingston and Ottawa. While the distance between the two is approximately 20 km (12 mi) shorter via Highway 15, Highway 401 and Highway 416 provide a quicker travel time.