# List of numbered roads in Durham Region

The numbered roads in the Regional Municipality of Durham account for about 832 kilometres (517 mi) of the county road system in the Canadian province of Ontario. The Durham Region Works Department owns and maintains the regional roads and regional highways, while the Ministry of Transportation of Ontario (MTO) owns and maintains the King's Highways in the region. The 67 (7 King's Highways, 4 Regional Highways, and 56 Regional Roads) numbered roads provide access to the entirety of the region. Highway 401 forms the backbone of the region, traveling from the western boundary of the region to the eastern boundary alongside Lake Ontario, and serving over 200,000 vehicles per day. Several provincially maintained highways existed in the region prior to 1998, when they were transferred to municipal government in the region as part of a province-wide downloading of highways. Where the regional tier of municipal government has since been responsible for these routes, they have been designated as Durham Regional Highways.

## Network

The road network of the Regional Municipality of Durham consists of 832 kilometres (2,087 lane kilometres) of arterial roadway. There are 60 numbered roads, referred to mostly as Regional Roads, though four former King's Highways are referred to as Regional Highways, where they are now owned and maintained by the region.
In addition to the roads, there are 209 bridge and culvert structures currently maintained by the region. The region is not responsible for the bridges over and under Highway 401, Highway 407 and Highway 412 nor the bridges over and under Highway 35/115 or, all of which are maintained by the MTO. The region is also exempt from the construction and maintenance of bridges crossed by railway, but not from bridges which separate road and rail crossings.

## History

The regional municipality of Durham was created in 1974 by the merger of portions of Durham and Ontario counties.

## Structures

The Regional Municipality of Durham is responsible for the maintenance of both pavement as well as many structures that are over, under, or near the pavement. Bridges, culverts, and traffic signals are all built and maintained by the Works Department.

## Services

The Durham Regional Police Service Traffic Enforcement unit handles enforcement of traffic laws, except on the King's Highways, which are patrolled by the Ontario Provincial Police. Speed limits on regional roads vary between 50 and 80 kilometres per hour. Police in Durham will generally not set speed traps, as the region encourages the safe flow of traffic, and punishes unsafe driving rather than speed limits. Maintenance and snow clearing is performed by the Durham Works Department. Five depots operate throughout the region in addition to the traffic operations centre in Whitby.

## Numbered roads
### Regional Highways

Durham Regional Highways :
| Route | Name(s) | Western/Southern Terminus | Eastern/Northern Terminus | Length | Communities | Comments |
| Durham Regional Highway 2 | Kingston Road Dundas Street West, King Avenue | Toronto–Durham boundary | Durham–Northumberland boundary | 43 km (27 mi) | Pickering, Ajax, Whitby, Bowmanville, Newcastle | Formerly part of Highway 2, prior to January 1, 1998. Split into four sections; ends 800 meters east of Fothergill Court in Whitby, resumes at Regional Road 55 (Townline Road), and has two discontinuities in Clarington. |
| Durham Regional Highway 12 | Brock Street North, Baldwin Street | Regional Road 28 Rossland Road | Gatineau hydro corridor, south of Highway 7 (Highway 407 interchange) | 4.8 km (3.0 mi) | Whitby, Brooklin | Formerly part of Highway 12, prior to January 1, 1998; continues north as Highway 12, south as Brock Street |
| Durham Regional Highway 47 | Toronto Street South, Brock Street | Regional Road 30 (York–Durham Line) | Highway 7 / Highway 12 | 25.1 km (15.6 mi) | Goodwood, Uxbridge | Formerly part of King's Highway 47, prior to April 1, 1997. Continues west as Regional Road 40. Discontinuous between First Avenue/Marietta Street and Fourth Avenue in Uxbridge. |
| Durham Regional Highway 48 | - | Highway 12 | Durham–Kawartha Lakes boundary | 6.6 km (4.1 mi) | Talbot | Formerly part of King's Highway 48. Continues east as Kawartha Lakes Road 48. |

### Regional Roads

Durham Regional Roads :
| Route | Name(s) | Western/Southern Terminus | Eastern/Northern Terminus | Length | Communities | Comments |
| Durham Regional Road 1 | Brock Road, Main Street | Montgomery Park Road | Regional Road 32 (Ravenshoe Road) | 46.2 km (28.7 mi) | Pickering, Uxbridge, Leaskdale, Udora | |
| Durham Regional Road 2 | Simcoe Street, Durham–Victoria Boundary Road | Harbour Road (former Durham Regional Road 62) | Brock Concession Road 14 | 49 km (30 mi) | Oshawa, Columbus, Raglan, Port Perry, Seagrave, Sonya, Manilla | Signed as Kawartha Lakes Road 2 between Seagrave and Manilla, where the road is maintained by the City of Kawartha Lakes under a boundary road agreement. Used originally by the Mississaugas to get to Osler Marsh. Later became the main highway to Port Perry, and was later extended to Beaverton. In the 1840s, Abram Farewell proposed maintaining the road with tolls, which were ultimately never imposed. |
| Durham Regional Road 2A | Brock Street West, Centre Street, Fairbanks Street | Regional Road 2 (Simcoe Street) | Regional Road 2 (Simcoe Street) | 1.8 km (1.1 mi) | Oshawa | |
| Durham Regional Road 3 | Winchester Road, Grandview Street North, Columbus Road, Darlington Concession 8 | Highway 7 / Highway 12 (Baldwin Street) | Regional Road 57 (Bowmanville Avenue) | 19.8 km (12.3 mi) | Brooklin, Oshawa, Enniskillen | |
| Durham Regional Road 4 | Taunton Road | Regional Road 30 (York–Durham Line) | Highway 35 / Highway 115 | 48.1 km (29.9 mi) | Pickering, Ajax, Whitby, Oshawa, Clarington | Continues west as Steeles Avenue into Toronto |
| Durham Regional Road 5 | Central Street, Pickering Concession 9, Myrtle Road, Raglan Road | Regional Road 30 (York–Durham Line) | Regional Road 2 (Simcoe Street) | 24.4 km (15.2 mi) | Pickering, Claremont, Whitby, Oshawa | |
| Durham Regional Road 6 | Saintfield Road | Highway 7 / Highway 12 | Regional Road 2 (Simcoe Street) | 7.0 km (4.3 mi) | Seagrave | |
| Durham Regional Road 7 | Island Road | Highway 7A (Scugog Street) | Hood Road / Carnegie Beach Drive | 11.5 km (7.1 mi) | | Passes through the Mississaugas of Scugog Island First Nation reserve, and by the Great Blue Heron Casino. |
| Durham Regional Road 8 | Brock Street West, Main Street South, Reach Street | Regional Road 30 (York–Durham Line) | Regional Road 2 (Simcoe Street) | 26.1 km (16.2 mi) | Uxbridge, Epsom, Port Perry, Ontario | |
| Durham Regional Road 9 | Ganaraska Road | Highway 35 / Highway 115 | Durham–Northumberberland boundary | 9.9 km (6.2 mi) | Kendal | |
| Durham Regional Road 10 | River Street | Regional Road 23 (Lakeridge Road) | Highway 7 / Highway 12 | 5.7 km (3.5 mi) | Sunderland | |
| Durham Regional Road 11 | Sandford Road | Regional Road 30 (York–Durham Line) | Regional Road 1 | 12.1 km (7.5 mi) | Sandford | Continues west into York Region as Herald Road and Green Lane |
| Durham Regional Road 12 | Cameron Street | Regional Road 23 (Lakeridge Road) | Regional Road 2 (Simcoe Street) | 7.1 km (4.4 mi) | Cannington | |
| Durham Regional Road 13 | Zephyr Road, Brock Concession 3 | Regional Road 39 | Road 2 (Simcoe Street) | 24.5 km (15.2 mi) | Zephyr, Leaskdale | |
| Durham Regional Road 14 | Liberty Street | Highway 401 | Regional Road 4 | 8.9 km (5.5 mi) | Bowmanville, Hampton | |
| Durham Regional Road 15 | Simcoe Street | Regional Road 23 (Osborne Street) | Durham–Victoria Boundary Road | 8.7 km (5.4 mi) | Beaverton | Continues east as Kawartha Lakes Road 8 (Glenarm Road) in the City of Kawartha Lakes |
| Durham Regional Road 16 | Ritson Road | Regional Road 60 (Wentworth Street) | Regional Road 3 (Winchester Road East) | 11.3 km (7.0 mi) | Oshawa | |
| Durham Regional Road 17 | Mill Street, Main Street, Manvers Road | Highway 401 | Regional Road 4 (Taunton Road) | 6.3 km (3.9 mi) | Newcastle | |
| Durham Regional Road 18 | Newtonville Road | Highway 401 | Regional Road 9 (Ganaraska Road) | 11.9 km (7.4 mi) | Newtonville, Kendal | |
| Durham Regional Road 19 | Shirley Road | Regional Road 2 (Simcoe Street) | Regional Road 57 | 11.0 km (6.8 mi) | | |
| Durham Regional Road 20 | Mosport Road, Boundary Road, Durham Road 20 | Regional Road 57 | Highway 35 | 12.5 km (7.8 mi) | | |
| Durham Regional Road 21 | Church Street, Goodwood Road | Regional Highway 47 (Main Street) | Highway 7 / Highway 12 | 18.4 km (11.4 mi) | Goodwood, Utica, Manchester | Continues east as Highway 7A towards Port Perry |
| Durham Regional Road 22 | Bayly Street, Victoria Street, Bloor Street | Regional Road 38 (Whites Road) | Regional Road 34 (Courtice Road) | 29.9 km (18.6 mi) | Pickering, Ajax, Whitby, Oshawa | |
| Durham Regional Road 23 | Lakeridge Road, Osborne Street, Mara Road | Regional Road 22 (Bayly Street East / Victoria Street West) | Highway 12 | 74.4 km (46.2 mi) | Ajax, Whitby, Pickering, Vallentyne, Port Bolster, Beaverton | Lakeridge Road serves as a boundary line for three-quarters of the municipalities of Durham: Ajax, Pickering, and Uxbridge to the west; Whitby, Scugog, and Brock to the east. |
| Durham Regional Road 24 | Church Street | Regional Road 22 (Bayly Street) | CN rail line bridge south of Highway 401 | 1.0 km (0.62 mi) | Ajax | Regional Road 24 designation was retired from the CN Rail line towards Regional Highway 2 (Kingston Road West) in 2015. |
| Durham Regional Road 25 | Consumers Drive, Stellar Drive, Champlain Avenue | Brock Street | Regional Road 53 (Stevenson Road) | 5.1 km (3.2 mi) | Whitby, Oshawa | |
| Durham Regional Road 25A | Champlain Avenue | Regional Road 25 (Stellar Drive) | Regional Road 52 (Thornton Road) | 1.7 km (1.1 mi) | Whitby, Oshawa | |
| Durham Regional Road 26 | Thickson Road | Regional Road 60 (Wentworth Street West) | Highway 7 / Highway 12 | 15.3 km (9.5 mi) | Whitby, Brooklin | |
| Durham Regional Road 27 | Altona Road | Regional Highway 2 (Kingston Road) | Regional Road 30 (York–Durham Line) | 10.5 km (6.5 mi) | Pickering, Whitevale | |
| Durham Regional Road 28 | Rossland Road, Peter Matthews Drive (Future road segment) | Regional Road 43 (Cochrane Street) | Regional Road 33 (Harmony Road) | 9.9 km (6.2 mi) | Whitby, Oshawa | Peter Matthews Drive is a future road segment in Pickering |
| Durham Regional Road 29 | Liverpool Road | Regional Road 22 (Bayly Street) | Regional Road 37 (Finch Avenue) | 2.0 km (1.2 mi) | Pickering | |
| Durham Regional Road 30 | York–Durham Line | Regional Road 40 / Regional Highway 47 | Regional Road 39 (Queensville Sideroad) | 18.4 km (11.4 mi) | Stouffville, Mount Albert | Continues east as Regional Road 39 (Scott Concession 3) |
| Durham Regional Road 31 | Westney Road, 7th Concession | Regional Road 44 (Harwood Avenue) | Regional Road 1 (Brock Road) | 18.7 km (11.6 mi) | Ajax, Greenwood | |
| Durham Regional Road 33 | Harmony Road | Regional Road 22 (Bloor Street East) | Regional Road 3 (Winchester Road East) | 10.3 km (6.4 mi) | Oshawa | |
| Durham Regional Road 34 | Courtice Road, Enfield Road | Highway 401 / Service Road East | Regional Road 3 | 14.7 km (9.1 mi) | Courtice | |
| Durham Regional Road 35 | Wilson Road | Regional Road 22 (Bloor Street East) | Regional Road 4 (Taunton Road East) | 6.2 km (3.9 mi) | Oshawa | |
| Durham Regional Road 36 | Hopkins Street, Anderson Street | Regional Road 25 (Consumers Drive) | Regional Road 28 (Rossland Road East) | 3.7 km (2.3 mi) | Whitby | |
| Durham Regional Road 37 | Finch Avenue | Regional Road 27 (Altona Road) | Regional Road 1 (Brock Road) | 5.8 km (3.6 mi) | Pickering | |
| Durham Regional Road 38 | Whites Road | Petticoat Creek Conservation Area | Highway 7 | 12.4 km (7.7 mi) | Pickering | Extended north to Highway 7 in February 2021 in order to have an interchange with Highway 407 as part of local development. |
| Durham Regional Road 39 | Scott Concession 3, Durham Road 39 | Regional Road 30 (York–Durham Line) | Regional Road 32 (Ravenshoe Road) | 10.1 km (6.3 mi) | Zephyr | Continues south as Regional Road 30 (York–Durham Line) |
| Durham Regional Road 40 | Alexander Knox Road | Future road segment | | | Pickering | Future road segment in Pickering |
| Durham Regional Road 41 | Salem Road | Regional Road 22 (Bayly Street) | Regional Road 4 (Taunton Road) | 6.4 km (4.0 mi) | Ajax | |
| Durham Regional Road 42 | Darlington–Clarke Townline | Regional Highway 2 (King Street) | Regional Road 4 (Taunton Road) | 8.1 km (5.0 mi) | | |
| Durham Regional Road 43 | Cochrane Street | Dundas Street West | Regional Road 28 (Rossland Road West) | 2.1 km (1.3 mi) | Whitby | |
| Durham Regional Road 44 | Harwood Avenue | Lake Driveway | Regional Highway 2 (Kingston Road) | 4.7 km (2.9 mi) | Ajax | |
| Durham Regional Road 45 | Henry Street | Regional Road 22 (Victoria Street) | Dundas Street West | 2.0 km (1.2 mi) | Whitby | |
| Durham Regional Road 46 | Brock Street South | Water Street | Highway 401 | 1.3 km (0.81 mi) | Whitby | Continues north as Durham Regional Highway 12 |
| Durham Regional Road 47 | Shore Line Road | Regional Road 23 (Mara Road) | Durham–Simcoe boundary | 2.0 km (1.2 mi) | | |
| Durham Regional Road 50 | Portage Road, Canal Road, Durham Road 50 | Ontario Highway 12 | Durham Regional Highway 48 | 5.2 km (3.2 mi) | Brock | Section from Regional Road 51 to just north of Trent-Severn Waterway was the Old Highway 12 before diverting to the west. |
| Durham Regional Road 51 | Old Highway 12 / Talbot Road | Talbot River | Regional Road 50 | 0.190 km (0.118 mi) | Brechin, Ontario, Beaverton, Ontario | Continues south as Regional Road 50 and north as Simcoe County Road 51. Original route of Ontario Highway 12 over Talbot River before being re-routed to the west. Road ends where bridge crossing beyond Durham Region into Simcoe County. |
| Durham Regional Road 52 | Phillip Murray Avenue, Boundary Road, Thornton Road | Regional Road 54 (Park Road) | Regional Road 4 (Taunton Road) | 7.8 km (4.8 mi) | Oshawa, Whitby | Split into three sections; two sections are south of Highway 401 and the Canadian National Railway, while the northern section resumes on Thornton Road at Regional Road 25A (Champlain Avenue) |
| Durham Regional Road 53 | Stevenson Road | Regional Road 52 (Phillip Murray Avenue) | Regional Road 28 (Rossland Road West) | 6.4 km (4.0 mi) | Oshawa | |
| Durham Regional Road 54 | Park Road | Regional Road 52 (Phillip Murray Avenue) | Regional Road 28 (Rossland Road West) | 6.4 km (4.0 mi) | Oshawa | |
| Durham Regional Road 55 | Townline Road | Regional Road 59 (Olive Avenue) | Regional Road 4 (Taunton Road) | 5.2 km (3.2 mi) | Oshawa, Courtice | |
| Durham Regional Road 56 | Farewell Street | Approx. 220 m south of Harbour Road | Regional Road 22 (Bloor Street East) | 1.8 km (1.1 mi) | Oshawa | |
| Durham Regional Road 57 | Waverley Road, Martin Road, Durham Road 57, New Scugog Road, Blackstock Road, Caesarea Road, Bowmanville Avenue | Highway 401 | Durham–Kawartha Lakes boundary | 41.9 km (26.0 mi) | Bowmanville, Blackstock, Caesarea | Continues east as Kawartha Lakes Road 57 |
| Durham Regional Road 58 | Manning Road, Adelaide Avenue | Brock Street | Regional Road 55 (Townline Road) | 10.1 km (6.3 mi) | Whitby, Oshawa | Manning and Adelaide are separated at the Whitby–Oshawa boundary by the Mount Lawn Cemetery. Closing this gap is part of the Durham Region Transportation Master Plan. There is also an environmental assessment underway for a planned eastern extension of Adelaide Avenue from Regional Road 55 (Townline Road) to Trulls Road. |
| Durham Regional Road 59 | Gibb Street, Olive Avenue | Regional Road 52 (Thornton Road) | Regional Road 55 (Townline Road) | 6.6 km (4.1 mi) | Whitby, Oshawa | Gibb Street and Olive Avenue are separated at Regional Road 2 (Simcoe Street). This corridor has been identified as a bottleneck and an environmental assessment is underway to determine a solution. |
| Durham Regional Road 60 | Wentworth Street | Regional Road 26 (Thickson Road South) | Regional Road 56 (Farewell Street) | 5.5 km (3.4 mi) | Whitby, Oshawa | Wentworth Street is discontinuous between Stevenson Road and Park Road by the General Motors of Canada Oshawa Assembly Plant. |