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The Canadian province of Ontario has an extensive network of Primary (King's), Secondary, and Tertiary Highways, with county-level and city-level roads linking between them. Over the years, however, Ontario has turned back numerous highways to municipal government bodies, renumbered them, or upgraded them to 400-series highways. In 1997 and 1998, many sections of the provincial highway network were downloaded to local municipalities (such as cities, counties or regional municipalities) by the Ontario Ministry of Transportation as a cost-saving measure. While highways were occasionally transferred to local governments in the past, the 1997-1998 downloads represented the most significant changes to Ontario's highway network. Many highways were completely devolved, while of others only short sections remain under provincial jurisdiction (Highway 2, once stretching across Southern Ontario, now is only a few kilometres long). Below is a partial list of partially or wholly devolved highways since 1997. ==Primary highways== * Highway 2 – Windsor to the Ontario-Quebec boundary, now Lake Shore Boulevard, Kingston Road, Toronto Road, and Loyalist Road. Its purpose was largely superseded by Highway 401 and 403; only a 1.1-kilometre section near Gananoque remains. * Highway 2A – Scarborough, Ontario. Was once an expressway in the 1940s until Highway 401 took over its current route in 1952. * Highway 2A (Essex County, Ontario) (1929) * Highway 3 – between St. Thomas and Leamington and within the urban areas of Port Colborne and Fort Erie. * Highway 4 – Downloaded portions: south of the interchange with Highway 401, and north/east of Highway 8 * Highway 5 – Downloaded all of the Paris-Scarborough route except one 12.7 km section between Ontario Highway 8 and Ontario Highway 6 * Highway 6 – Downloaded portions: south/west of Port Dover * Highway 7 – Downgraded the portion in York Region west of Main St. Markham/ Markham Rd./Highway 48. * Highway 8 – From Winona to Niagara Falls, and, more recently, from Peters Corners to Winona. * Highway 9 – Split into two segments due to downloading of various portions. * Highway 10 – Hurontario Street in Mississauga and Main Street in Brampton were formerly part of this route, but lost the designation with the completion of Highway 410 through the area. The Highway 10 designation is still in use north of Brampton. * Highway 11 – from Barrie southward; Now known as Yonge Street, York County Road 1, and Simcoe County Road 4. * Highway 11A – Toronto; Gardiner Expressway/Lake Shore Boulevard to Highway 401. Now known only as York Street, University Avenue, Avenue Road, and Oriole Parkway. * Highway 11B – Cobalt-New Liskeard. Portions of the road in Coleman Township are still signed as 11B. * Highway 12 – Whitby—south of Highway 407 right-of-way. * Highway 14 – Marmora to Highway 62 near Foxboro, the 14 numbering originally continued south (on what is now Highway 62) to Picton. Only one of the original 15 Ontario highways (2-17 with 13 skipped) to be completely dropped from the system. * Highway 15 – From CFB Kingston to Highway 401, now Kingston Road 15, and from Carleton Place to Arnprior, now Lanark County Road 29 and Ottawa Road 29. * Highway 16 – Upgraded to a 400 series highway (Highway 416). Only exists as a short connector highway between Highway 416 north of Highway 401 and Leeds & Grenville County Road 2 (formerly Highway 2). The section north of North Gower, which is different from the original route, is designated Ottawa Road 73 (Prince of Wales Drive). * Highway 17 – Replaced by Highway 417 south and east of Arnprior to the Ontario/Quebec border. * Highway 18 – From Windsor to Leamington, now Essex County Road 20 * Highway 19 – From terminus at Port Burwell to Highway 3 in Tillsonburg; from Highway 401 to terminus at Highway 86 near Milverton. The section from Tillsonburg to Highway 401 remains. * Highway 20 – From QEW exit 88 east of Hamilton to Highway 58 near Allanburg and from Thorold Townline Road to Niagara Falls, now Regional Road 20 (Confederation Parkway through Stoney Creek, Rymal Road, and Lundy's Lane); only a 1.9-kilometre section near Allanburg remains. * Highway 21 – Portions South of Highway 402 * Highway 22 – London, Ontario to near Warwick, Ontario, connecting to Sarnia, Ontario and to Arkona by Highway 7; replaced by most of routing of Highway 402 * Highway 24 – 2 km south of Cambridge and northward through Guelph, Orangeville, Shelburne, and Collingwood on Georgian Bay. * Highway 24A * Highway 25 – Now Bronte Road (south of Ontario Highway 407 in Oakville), Ontario St/Steeles Av/Martin St/Halton Regional Rd 25 in Milton, Halton Regional Rd 25 in Halton Hills, and Main Street in Acton. Continues in segments through Wellington & Dufferin Counties to north of Grand Valley at Highway 89. * Highway 27 – Etobicoke to Midhurst; now referred to as Highway 27 in Toronto, York Regional Road 27 in Vaughan, and Simcoe County Road 27 in Simcoe County * Highway 28 – Port Hope to Highway 7A, (which had a concurrency with Highway 115 for 13 km to the Parkway exit), up to NE of Lakefield, at Highway 134. * Highway 29 – Brockville to Arnprior. The section from Smiths Falls to Carleton Place is now Highway 15; the rest was demoted as County Road 29. * Highway 30 – Brighton to Havelock * Highway 31 – Morrisburg to Ottawa * Highway 32 – Gananoque to Highway 15, near Seeleys Bay; now referred to as Leeds and Grenville County Road 32 * Highway 33 – Trenton to Picton; the portion east of Collins Bay Road in Kingston, Ontario was also removed from the provincial system * Highway 34 – Lancaster to Hawkesbury * Highway 36 – Lindsay to Highway 28 at Burleigh Falls. Now referred to as Kawartha Lakes Road 36. * Highway 38 – Kingston to Highway 7 near Sharbot Lake; now referred to as Kingston 38 and South Frontenac Road 38 * Highway 39 – Windsor to south of Belle River. (1934-1970. Now Essex County Road 22 from Essex County Road 42 to Essex County Road 2, and Essex County Road 2 into Windsor. Rendered obsolete with the completion of E.C. Row Expressway in 1970, and was absorbed into Highway 2. * Highway 41 – Portion between Highway 2 and Highway 7 downloaded as Lennox and Addington County Road 41. * Highway 42 – Entirely downloaded, Westport to Forthton. * Highway 43 – Entirely downloaded. Perth to Alexandria, via Smiths Falls, and Winchester deleted in 1998—Perth to Smith Falls section had been part of Ontario Highway 15 prior to renumbering of the Perth-Carleton Place-Kanata portion of 15's route as Highway 7 in 1961. * Highway 44 – Between Lanark County Road 29 (formerly ) in Almonte, Ontario and Donald B. Munro Drive (formerly ) west of Carp, Ontario (1938–1997). Now Ottawa Road 49 (March Road). * Highway 45 – Between Northumberland County Road 2 (formerly ) in Cobourg and in Norwood. Now known as Northumberland County Road 45 and Peterborough County Road 45. * Highway 46 – Between and Kawartha Lakes Road 48 (formerly ) near Bolsover. Now Kawartha Lakes Road 46. * Highway 47 – Highway 48 north of Stouffville to Highways 7 & 12 south of Greenbank. * Highway 48 – Between Kingston Road and York Regional Road 73. * Highway 49 – Between Picton and the Quinte Skyway Bridge. * Highway 50 – Toronto section; also referred to as Albion Road to Highway 89 west of Alliston. * Highway 51 – North of Cataract to Caledon. * Highway 52 – East of Alberton to Highway 8 at Peters Corners. * Highway 53 – Stoney Creek to Eastwood. * Highway 54 * Highway 55 – Now Niagara Regional Road 55. * Highway 56 – Highway 3 west of Canfield to Stoney Creek. * Highway 58 – From Highway 58A in Welland to Highway 406 between Turner's Corners and Allanburg. * Highway 59 – Transferred in its entirety to the counties of Norfolk, Oxford and Perth. * Highway 68 – became Highway 6 on Manitoulin Island. * Highway 69 – replaced by Highway 400 south of MacTier. Highway's length continues to shrink with extension of Highway 400 to Sudbury, and the number will disappear entirely by 2021. * Highway 70 – renamed Highway 6 from Hepworth to Springmount. * Highway 73 – Port Bruce to Dorchester * Highway 74; New Sarum to Nilestown. Deleted in 1997. * Highway 76 * Highway 78 * Highway 79 * Highway 80 * Highway 81 * Highway 82 * Highway 83 * Highway 84 * Highway 87 * Highway 88 – Highway 27 junction at Bond Head to Highway 11 junction in Bradford. Existed from 1938 to 1998. Renamed as Simcoe County Road 88. * Highway 89 – Eastern end truncated at Ontario Highway 400 (original terminus was Ontario Highway 11) * Highway 90 – Barrie to Angus and CFB Borden. * Highway 93 – South of Highway 400 interchange * Highway 95 – Wolfe Island * Highway 96 – Wolfe Island * Highway 97 – Freelton to Hickson, through Galt/Cambridge. * Highway 98 – Essex County 1938-1970. It was deleted, becoming Essex County Road 46, and Kent County (now Chatham-Kent) Road 8. Its western terminus was downtown Windsor, and its eastern terminus was downtown Blenheim, at Highways 40 and 3. Rendered obsolete with the completion of nearby freeway, Highway 401 (which paralleled Highway 98 for the majority of its length). * Highway 99 – Governor's Road (original alignment of Dundas Street from Highway 24 North of Brantford to Ancaster * Highway 100 – MCF (ON-401) at exit 194 to Former ON-2, eastern part of London, now Veterans Memorial Parkway. *Highway 103 – Highway 400 and 12 to Highway 69 junction, first the original alignment of Highway 69, now Highway 400. *Highway 104 – to Grand Valley from Highway 9, then Highway 25. * Highway 107 – Highway 18 in Ruthven, Ontario, to Highway 3 in Ruthven. Now Essex County Road 45. * Highway 114 – Highway 3 (Former alignment, now Essex County Road 34) in Maidstone, Ontario (now a part of Tecumseh, Ontario, to Highway 98 (Now Essex County Road 46). Part of road is still signed as "Old HWY 114" from Manning Road (Essex County Road 19) to Provincial Road (Essex County Road 46). * Highway 117 – Highway 11 north of Bracebridge to Dorset. * Highway 118 – Western end truncated at Ontario Highway 11 (original terminus was Ontario Highway 169) * Highway 121 – Highway 35 south of Fenelon Falls to Haliburton. Eastward is renamed Highway 118. *Highway 123 – now Airport Road in North Bay, Ontario. * Highway 126– MacDonald-Cartier Freeway (Highway 401) in the south end of London, Ontario (partially superhighway—Wenige Expressway) to Highway 2, some think extended to Highway 22 (present Fanshawe Park Road East), now known as Highbury Avenue. (The part between Highway 401 and the south Thames River had no name, while a half-mile section from the Thames to Hamilton Road was the Wenige Expwy, and north from there was Highbury Avenue.) * Highway 131 – Renamed Simcoe County Road 27. * Highway 133 – Renamed Lennox and Addington County Road 4. * Highway 134 – Renamed Highway 28 when that road was re-routed and fully absorbed Highway 134. * Highway 135 – Short highway in London, between Highway 401 and former Highways 2 & 4. Now called Exeter Road. * Highway 136 – Cataract to Orangeville. Formerly Highway 24. * Highway 148 – Highway 17 to Pembroke, Ontario city limits was decommissioned, now just a connecting link (which allows it to still be signed as Highway 148). Continuation of Quebec route 148. * Highway 169 – Brechin to Foot's Bay via Gravenhurst, shared space with Highway 11 from Washago to Gravenhurst. * Queen Elizabeth Way – Highway 427 to Lake Shore Blvd. (former Highway 2). This section is now known as the Gardiner Expressway, which is owned by the City of Toronto. Additional highways and bypass routes devolved: 2B, 2S, 3B, 4A, 5A, 7B, 8A, 11B, 12B, 13, 15A, 16, 17A, 17B, 24A, 35B, 40B, 48B, 401A. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of former provincial highways in Ontario」の詳細全文を読む スポンサード リンク
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