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Ontario Highway 42

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Ontario King's Highway 42.svg

Highway 42
Leeds and Grenville County Road 42
Route information
Length52.8 km[3] (32.8 mi)
HistoryEstablished July 31, 1935[1]
Decommissioned March 31, 1997[2]
Major junctions
West endWestport
  Highway 15
East end Highway 29 at Forthton
CountiesUnited Counties of Leeds and Grenville
TownsForthton, Athens, Delta, Newboro, Westport
Highway system
Highway 41Highway 48
Former provincial highways
  Highway 43  →

King's Highway 42, commonly referred to as Highway 42, was a provincially maintained highway in the Canadian province of Ontario. The 52.8-kilometre (32.8 mi)-long route connected Highway 29 at Forthton with the town of Westport, intersecting Highway 15 en route. Highway 42 was assumed in 1935, and aside from paving the partially gravelled road, generally remained unchanged throughout its existence. In 1997, it was decommissioned and transferred to the United Counties of Leeds and Grenville, subsequently being redesignated as Leeds and Grenville County Road 42.

Route description[edit]

Highway 42 began in Westport and proceeded east for 52.8 km (32.8 mi) to Highway 29 in the hamlet of Forthton.[3] An oddity in the provincial highway system, the terminus in Westport was one of only a handful that never connected to another King's Highway. Within Westport, the route followed Concession Street, travelling southeast. It made two 90 degree curves south of the town, first to the northeast and then back to the southeast, remaining close to the shoreline of Upper Rideau Lake. At the southwestern edge of the lake, the highway made another sweeping curve to the northeast and entered Newboro. There it crossed the Rideau Canal and gradually curved to the east just north of Newboro Lake. Briefly paralleling an uplifted railway bed, the highway encountered Highway 15 in Crosby.[4][5][6]

Between Crosby and Athens, the route meandered about, travelling in a generally east-southeast direction through the communities of Forfar, Philipsville and Delta. At Delta, the highway becomes sandwiched between Upper and Lower Beverley lakes, curving northeast around the southern shores of the former. At Washburns Corners, the route turns east until reaching Athens. The final segment of Highway 42 — between Athens and Forthton — zigzagged northeast and southeast. Midway between the two communities, it passed through Glen Elbe. The route ended at a junction with Highway 29, where a slip lane connected eastbound Highway 42 with southbound Highway 29 towards Brockville.[4][5][6]

The majority of the land use alongside Highway 42, outside of the few communities along the route, was, and still remains, agricultural. Several sections also pass through thick forests lining the southern fringe of the Canadian Shield. Residences dot both sides of the length of the two-laned highway throughout its length. Since being decommissioned in 1997, the route has been known as Leeds and Grenville County Road 42.[5][6]


Highway 42 was assumed on July 31, 1935, following the mostly paved road between Westport and Highway 29.[1][7] The remaining 11.7 km (7.3 mi) of unpaved highway were improved to a gravel surface that year.[8] By 1949, the highway was fully paved.[9] Initially, the highway travelled concurrently with Highway 29 into Brockville.[8] This concurrency was eventually removed; at some point between 1982 and 1984, Highway 42 was truncated at Forthton.[10][11] It remained this way until March 31, 1998, when the entire route was decommissioned and transferred to the United Counties of Leeds and Grenville.[2] It has since been redesignated as Leeds and Grenville County Road 42.[5]

Major intersections[edit]

The following table lists the major junctions along Highway 42, as noted by the Ministry of Transportation of Ontario.[3] The entire route was located in Leeds and Grenville United Counties

Westport0.00.0County Road 12 (Bedford Street)
Newboro8.55.3Main StreetRideau Canal Lock 36
Crosby13.98.6 Highway 15Kingston, Smiths Falls
Rideau Lakes21.313.2County Road 8
Phillipsville23.014.3County Road 8
Leeds and the Thousand Islands31.419.5County Road 33 (Lyndhurst Road)

County Road 5 (Elgin Street North) / County Road 40 (Elgin Street South)
46.228.7County Road 30
Forthton52.832.8 Highway 29Brockville, Smith Falls
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b "The King's Highways Assumed in 1935". Annual Report (Report). Department of Highways. March 31, 1936. p. 49.
  2. ^ a b Highway Transfers List - "Who Does What" (Report). Ministry of Transportation of Ontario. June 20, 2001. p. 9.
  3. ^ a b c Ministry of Transportation of Ontario (April 1, 1989). Provincial Highways Distance Table. Government of Ontario. p. 62. ISSN 0825-5350.
  4. ^ a b Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation. 1990–91.
  5. ^ a b c d Ontario Back Road Atlas (Map). Cartography by MapArt. Peter Heiler Ltd. 2010. pp. 48–49. § Y57–Z61. ISBN 978-1-55198-226-7.
  6. ^ a b c Google (June 8, 2015). "Route of Highway 42" (Map). Google Maps. Google. Retrieved June 8, 2015.
  7. ^ Ontario Road Map (Map). Cartography by C.P. Robins. Department of Highways. 1927. § J4.
  8. ^ a b Ontario Road Map (Map). Cartography by C.P. Robins. Department of Highways. 1937. § S7.
  9. ^ Ontario Road Map (Map). Cartography by C.P. Robins. Department of Highways. 1949. § Q40–41.
  10. ^ Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation and Communications. 1982–83. § F30–31.
  11. ^ Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation and Communications. 1984–85. § F30–31.

External links[edit]