Highway 43 (Ontario)

Highway 43
Route information
Maintained by the Ministry of Transportation
Length:	154.2 km (95.8 mi)
Existed:	1938 – January 1, 1998
Major junctions
West end:	Highway 7 – Perth
	Highway 15 – Smiths Falls  Highway 416 – Kemptville  Highway 31 – Winchester
East end:	Highway 34 – Alexandria
Location
Major cities:	Perth, Smiths Falls
Towns:	Merrickville, Kemptville, Winchester, Chesterville, Finch, Alexandria
Highway system
Ontario provincial highways List 400-series Former ← Highway 42 Highway 44 →

King's Highway 43, also known as Highway 43, was a provincially maintained highway in the Canadian province of Ontario. On January 1, 1998, the entire route was transferred to the county that each section resided in, resulting in the current designations of Lanark County Road 43, Leeds and Grenville Road 43 and Stormont, Dundas and Glengarry Road 43. Highway 43 ran somewhat parallel to and between Highway 401 and Highway 417 from Highway 7 in Perth to Highway 34 in Alexandria, passing through several small towns along the way. At 154.2 km (95.8 mi), it is the longest highway in Ontario to be decommissioned entirely during the mass transfer of Highways in 1997 and 1998.

Highway 43 began in the west at Highway 7 on the edge of Perth. It travelled eastward north of the Tay Canal and Lower Rideau Lake into Smiths Falls. After a brief concurrency with Highway 15 southwards, the route continued east nearby the Rideau Canal through Merrickville and Kemptville, meeting what was then a soon-to-open interchange with Highway 416 east of the latter. The highway continued east, bypassing the communities of Winchester and Chesterville, jogging southwards several times. After bisecting Finch and skirting south of Avonmore, the route encountered Ontario Highway 138 before entering Monkland. After passing north of Loch Garry, Highway 43 entered Alexandria, ending at an intersection with Highway 34 (Main Street) in the centre of the town.

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