. The regional road system was created by the
(RMOC) and managed by the RMOC until 2001. In 2001 when all cities, towns, and regions within the former RMOC amalgamated to form the new city of Ottawa, responsibility of the regional road system was transferred to the new city of Ottawa.
In general, even numbered routes run east-west and odd numbered routes run north-south. Also, the lowest numbered routes are generally found in the western regions for even (east-west) numbered routes, and in the eastern regions for odd (north-south) numbered routes. This pattern, however, has many exceptions. As more roads were added to the numbered regional road system the availability of numbers decreased and, consequently, the numbering pattern had to be broken.
In smaller communities and rural areas the regional roads are, for the most part, adequately signed with trapezoidal shaped signs with rounded edges, which are often referred to as “flowerpots” due to the shape of the sign. Older signs installed prior 2001 have the legend “Ottawa-Carleton” at the top with the route number underneath. Newer signs installed after 2001 use the legend “Ottawa” or simply “O” written in the city of Ottawa’s typeface. Most regional road signs are not marked with directional tabs indicating the direction of the road (i.e. North, South, East, West).
Most municipal roads in the urban areas of Ottawa are not signed with route numbers or are very poorly signed despite having official route numbers and being listed on many maps with these numbers. Instead, most urban sections of regional roads are referred to by their names. The one major exception is Route 174, which was originally “
” or simply “The 174”.
onto regional authorities in 1997 and 1998 the former Regional Municipality of Ottawa-Carleton was given responsibility over former Highways
. These former highways became known as regional roads (subsequently city routes) 73, 31, 49, and 174 respectively.
| Number | Names | Western/Southern Terminus | Eastern/Northern Terminus | Major Communities | Comments |
|---|
| 2 | Donnelly Drive | Ottawa/Lanark County Border | Ottawa Road 5 (Donnelly Drive) | Burritts Rapids | Continues west as Lanark County Road 2. Erroneous "To Highway 16" trailblazers still posted at eastern terminus. Sparsely signed along entire route. |
| 3 | Dwyer Hill Road, Upper Dwyer Hill Road | Ottawa Road 2 (Donnelly Drive) | Ottawa Road 20 (Kinburn Side Road) | Burritts Rapids | Well signed. |
| 4 | Dalmeny Road, Marvelville Road | Ottawa Road 13 (Rideau Valley Drive South) | Ottawa Road 41 (Gregoire Road) | | Well signed. |
| 5 | Donnelly Drive, 4th Line Road, Century Road, North Gower Road, McBean Street, Huntley Road, Stittsville Main Street, Carp Road, Harbour Road, Fitzroy Road, Canon Smith Road, Aylwin Road | Ottawa/Leeds & Grenville County Border (Rideau River) | Ottawa Road 7 (Ferry Road) | North Gower, Richmond, Stittsville,Carp, Fitzroy Harbour | Continues south as Leeds & Grenville County Road 44. Adequately signed. |
| 5A | Stittsville Main Street | Ottawa Road 5 (Stittsville Main Street) | Ottawa Road 36 (Hazeldean Road) | Stittsville | |
| 6 | Roger Stevens Drive, Snake Island Road, Victoria Road | Ottawa/Lanark County Border | Ottawa Road 41 (Gregoire Road (south), Boundary Road (north)) | North Gower, Kars, Metcalfe | Continues west as Lanark County Road 4. Popular alternate route to Smiths Falls. Well signed. |
| 6A | Cartwright Road | Ottawa Road 6 (Victoria Road) | Ottawa Road 41 (Boundary Road) | | |
| 7 | Ferry Road | Ottawa Road 22 (Galetta Side Road) | Toll ferry to Quyon, Quebec | | |
| 8 | Brophy Drive, Bankfield Road, Mitch Owens Road, Boundary Road, Russland Road | Ottawa Road 49 (Eagleson Road) | Ottawa Road 41 (Boundary Road) | Manotick, Greely | Heavy traffic for a rural road. Sparsely signed along entire route. |
| 9 | Dunrobin Road | Ottawa Road 49 (Eagleson Road) | Ottawa Road 22 (Galetta Side Road) | Dunrobin | Adequately signed. |
| 10 | Franktown Road, Perth Street | Ottawa/Lanark County Border | Ottawa Road 49 (Eagleson Road) | Richmond | Continues west as Lanark County Road 10. Popular alternate route to Perth and Kingston due to low traffic volume. Well signed. Ottawa Road 10 originally followed Richmond Road and Moodie Drive up to Carling Avenue. Most of this segment has been replaced by Ottawa Road 59 |
| 11 | Moodie Drive | Ottawa Road 8 (Brophy Drive) | Ottawa Road 32 (Hunt Club Road) | | Above average heavy duty truck traffic due to dumps and quarries. Well signed with new style Ottawa signs. |
| 12 | Fallowfield Road | Ottawa Road 3 (Dwyer Hill Road) | Ottawa Road 17 (Merivale Road) | Barrhaven | Well signed except at Ottawa Road 12 (Fallowfield Road) and Strandherd Road intersection. |
| 13 | Pinecrest Road, Greenbank Road, Jockvale Road, Rideau Valley Drive North, Roger Stevens Drive, Rideau Valley Drive South, Dilworth Road | Ottawa Road 5 (4th Line Road) | Ottawa Road 38 (Carling Avenue) | Nepean, Barrhaven, Manotick, Kars | Adequately signed north of Ottawa Road 12 (Fallowfield Road)). |
| 14 | Leitrim Road | Ottawa Road 19 (River Road) | Ottawa Road 26 (Russell Road) | | |
| 15 | Woodroffe Avenue | Ottawa Road 73 (Prince of Wales Drive) | Ottawa River Parkway | Nepean | |
| 16 | Holly Acres Road, Richmond Road, Baseline Road, Heron Road | Ottawa Road 38 (Carling Avenue) | Ottawa Road 74 (Walkley Road) | Nepean, Ottawa | Forms old boundary between Ottawa and Nepean for much of its length. |
| 17 | Merivale Road, Clyde Avenue, Maitland Avenue | Ottawa Road 73 (Prince of Wales Drive) | Ottawa Road 38 ( Carling Avenue) | Nepean | |
| 17A | Clyde Avenue | Ottawa Road 17 (Merivale Road) | Ottawa Road 16 (Baseline Road) | Nepean | No longer exists. Replaced by 17 |
| 18 | Corkstown Road | Ottawa Road 49 (Eagleson Road) | Ottawa Road 59 (Moodie Drive) | Nepean | Probably no longer numbered. |
| 19 | Vanier Parkway, Riverside Drive, River Road | Ottawa/Leeds & Grenville County Border | Ottawa Road 44 (Beechwood Avenue) | Vanier, Ottawa, Riverside South, Manotick | Continues south as Leeds and Grenville County Road 19. Sparsely but adequately signed. |
| 20 | Kinburn Side Road | Ottawa/Lanark County Border | Ottawa Road 9 (Dunrobin Road) | Antrim, Kinburn, Woodlawn | Continues south as Lanark County Road 20. |
| 21 | Torwood Drive, 6th Line Road | Ottawa Road 109 (Riddell Drive) | Ottawa Road 129 (Vances Side Road) | Torbolton | Probably no longer numbered. |
| 22 | Galetta Side Road | Ottawa Road 29 | Ottawa Road 9 (Dunrobin Road) | Galetta, Dirleton | |
| 23 | Cedarview Road | Ottawa Road 12 (Fallowfield Road) | Ottawa Road 16 (Baseline Road) | Barrhaven | Only signed at southern terminus. |
| 24 | Lester Road | Ottawa Road 25 (Albion Road) | Ottawa Road 31 (Bank Street) | Gloucester | |
| 25 | Albion Road, Stagecoach Road | | Ottawa Road 31 (Bank Street) | Gloucester | Poorly signed especially at concurrency with Ottawa Road 8 (Mitch Owens Road). |
| 26 | St. Laurent Boulevard, Ramsayville Road, Russell Road | Ottawa Road 44 (Hemlock Road) | Prescott & Russell County Border | Ottawa | Continues east as Prescott & Russell County Road 26. Not signed in urban areas of Ottawa. |
| 27 | Blair Road, Anderson Road, 8th Line Road | Ottawa Road 8 (Mitch Owens Road) | Dead end | Metcalfe | Adequately signed south of Innes Road. May no longer be numbered north of Montreal Road. |
| 28 | Bearbrook Road, Innes Road, Blackburn By-pass, Navan Road, Colonial Road | Ottawa Road 34 (Montreal Road) | Ottawa/ Prescott and Russell border | Blackburn Hamlet, Notre-Dame-des-Champs, Navan, Sarsfield | Continues on to Prescott and Russell #1 (Du Golf Road). Bearbrook/Innes Road portions may no longer be numbered. Concurrent with Ottawa Roads 30 and 128. |
| 29 (I) | York Corners Road | Ottawa Road 4 (Marvelville Road) | Ottawa Road 8 (Mitch Owens Road) | Kenmore, Edwards | There are two 29's, this road may no longer be considered 29 |
| 29 (II) | | Ottawa/Lanark County Border | Ottawa Road 117 (Madawaska Boulevard) | | Continues south as Lanark County Road 29. Not named. Formerly Highway 15 (and before that, 29). |
| 30 | Industrial Avenue, Innes Road | Ottawa Road 19 (Riverside Drive) | Ottawa Road 35 (Dunning Road) | Ottawa, Blackburn Hamlet, Orleans, Cumberland | Originally ran down Cyrville Road. |
| 31 | Bank Street | Stormont, Dundas and Glengarry County Border | Ottawa Road 34 (Wellington Street) | Ottawa, Gloucester | Continues south as Stormont, Dundas and Glengarry County Road 31. Briefly known as Ottawa Road 85, but switched. Bank Street north of Heron Road was formerly Ottawa Road 85. Bank Street south of Heron Road was formerly Highway 31. |
| 32 | Hunt Club Road, Hawthorne Road | Ottawa Road 59 (Richmond Road) | Ottawa Road 26 (Russell Road) | Nepean, Gloucester | Only signed at western and eastern termini and on Highway 416. |
| 33 | Rockdale Road, Frank Kenny Road | Ottawa/Prescott and Russell County border | Ottawa Road 30 (Innes Road) | Cumberland | Continues on Prescott and Russell #28 (St-Guillaume Road) |
| 34 | Wellington Street, Rideau Street, Montreal Road, St. Joseph Boulevard, Old Montreal Road | Ottawa River Parkway | Ottawa Road 35 (Dunning Road) | Ottawa, Vanier, Gloucester, Orleans, Cumberland | Formerly Highway 17B west of Ottawa Road 174 |
| 35 | Dunning Road, Old Montreal Road, Cameron Street | Ottawa Road 26 (Russell Road) | Ferry to Masson-Angers, Quebec | Bearbrook, Leonard, French Hill, Cumberland | Continue on Chemin du Quai in Gatineau |
| 36 | Hazeldean Road, Robertson Road, Richmond Road, Wellington Street West, Somerset Street West | Highway 7 | Ottawa Road 91 (Elgin Street) | Stittsville, Kanata, Bells Corners, Nepean, Ottawa | Not signed east of Ottawa Road 59 (Moodie Drive). Formerly Highways 7 and 15 approaching Ottawa from the west. |
| 37 | Saumure Road | Ottawa Road 8 (Russland Road) | Ottawa Road 26 (Russell Road) | Cumberland | |
| 38 | Carling Avenue | Ottawa Road 49 (March Road) | Ottawa Road 79 (Bronson Avenue) | Kanata, Nepean, Ottawa | Not signed east of Ottawa Road 59 (Moodie Drive). The section east of Richmond Road to Ottawa Road 79 (Bronson Avenue) was Highway 17B prior to 1998. |
| 39 | Champlain Street | Ottawa Road 34 (St. Joseph Boulevard) | Dead end. | Orleans | |
| 40 | Slater Street | Ottawa Road 34 (Bronson Avenue) | Ottawa Road 91 (Elgin Street) | | One way eastbound. |
| 41 | Boundary Road, Gregoire Road, Mer Bleue Road | Marionville Road (south section); Ottawa Road 28 (Navan Road) (north section) | Ottawa Road 26 (Russell Road) (south); Ottawa Road 30 (Innes Road) (north) | | Named because it marks the boundary between the city of Ottawa and Prescott & Russell County. Two sections. Separated by the Mer Bleue Conservation Area. |
| 42 | Albert Street | Ottawa Road 34 (Bronson Avenue) | Ottawa Road 91 (Elgin Street) | Ottawa | One way westbound. |
| 43 | Ramsayville Road | Ottawa Road 8 (Mitch Owens Road) | Ottawa Road 74 (Walkley Road) | | |
| 44 | St. Patrick Street/Murray Street, Beechwood Avenue, Hemlock Road | Alexandra Bridge | Ottawa Road 26 (St. Laurent Boulevard) | Ottawa, Vanier, Rockcliffe Park | |
| 45 | Munster Road | Ottawa Road 10 (Franktown Road) | Ottawa Road 12 (Fallowfield Road) | Munster | Well signed. |
| 46 | Thomas A. Dolan Parkway | Ottawa Road 5 (Carp Road) | Ottawa Road 9 (Dunrobin Road) | Dunrobin | Well signed. |
| 47 | Tenth Line Road | Ottawa Road 28 (Navan Road) | Ottawa Road 55 (Jeanne d'Arc Boulevard) | Burromee, Orleans | |
| 47A | Old Tenth Line Road | Ottawa Road 47 (Tenth Line Road) | Ottawa Road 34 (St. Joseph Boulevard) | Orleans | |
| 48 | Laurier Avenue, Charlotte Street | Ottawa Road 79 (Bronson Avenue) | Ottawa Road 34 (Rideau Street) | Ottawa | |
| 49 | March Road, Eagleson Road | Ottawa/Lanark County Border | Ottawa Road 8 (Brophy Drive) | Corkery, Westwood, South March, Kanata | Continues into Lanark County as Lanark County Road 49. Was Highway 44 prior to April 1, 1997 from then Highway 17 to Ottawa/Lanark County border. Sparsely signed north of Ottawa Road 10 (Perth Street). |
| 50 | Coventry Road, Ogilvie Road | Ottawa Road 19 (Vanier Parkway) | Ottawa Road 34 (Montreal Road) | Ottawa, Gloucester | |
| 51 | Meadowlands Drive, Hog's Back Road, Brookfield Road | Ottawa Road 15 (Woodroffe Avenue) | Ottawa Road 79 (Airport Parkway) | Nepean, Ottawa | |
| 52 | Knoxdale Road | Ottawa Road 32 (Hunt Club Road) | Ottawa Road 15 (Woodroffe Avenue) | Nepean | Used to continue west to Richmond Road, but Hunt Club replaced most of Knoxdale. Current segment may no longer be numbered. |
| 53 | MacFarlane Road | Ottawa Road 17 (Merivale Road) | Ottawa Road 73 (Prince of Wales Drive) | Nepean | Road no longer reaches Prince of Wales. Probably no longer numbered. |
| 54 | Trail Road | Ottawa Road 11 (Moodie Drive) | Barnsdale Road | Nepean | |
| 55 | Jeanne d'Arc Boulevard | Ottawa Road 30 (Innes Road) | Ottawa Road 174 (Queensway) | Orleans | |
| 56 | Orléans Boulevard | Ottawa Road 30 (Innes Road) | Ottawa Road 34 (St. Joseph Boulevard) | Orleans | |
| 57 | Trim Road | Ottawa Road 30 (Innes Road) | Ottawa Road 174 | Orleans | |
| 59 | Moodie Drive, Richmond Road | Ottawa Road 12 (Fallowfield Road) | Ottawa Road 38 (Carling Avenue) | Bells Corners, Fallowfield | Well signed. |
| 61 | Terry Fox Drive | Ottawa Road 36 (Hazeldean Road) | Campeau Drive | Kanata | Not signed. |
| 63 | Merivale Road | Ottawa Road 17 (Clyde Avenue) | Ottawa Road 38 (Carling Avenue) | Nepean, Ottawa | Merivale Road south of Clyde is Ottawa Road 17, and it continues down Clyde |
| 67 | Kirkwood Avenue | Ottawa Road 63 (Merivale Road) | Ottawa Road 36 (Richmond Road) | Ottawa | Not signed |
| 68 | North River Road, McArthur Avenue | Ottawa Road 34 (Montreal Road) | Ottawa Road 26 (St. Laurent Boulevard) | Vanier, Ottawa | |
| 69 | Fisher Avenue, Holland Avenue | Ottawa Road 73 (Prince of Wales Drive) | Scott Street | Nepean, Ottawa | Southern half forms old boundary between Nepean and Ottawa |
| 71 | Parkdale Avenue | Ottawa Road 38 (Carling Avenue) | Ottawa River Parkway | Ottawa | |
| 72 | Main Street, Smyth Road | Colonel By Drive | Ottawa Road 26 (St. Laurent Boulevard) | Ottawa | |
| 73 | Prescott Highway, Prince of Wales Drive, Preston Street | Ottawa Road 5 (4th Line Road) | Ottawa Road 38 (Carling Avenue) | Manotick, North Gower | Was Highway 16 prior to 1998. Very poorly signed except at southern terminus. |
| 74 | Walkley Road | Ottawa Road 19 (Riverside Drive) | Ottawa Road 43 (Ramsayville Road) | Ottawa | |
| 75 | Rochester Street | Ottawa Road 38 (Carling Avenue) | Gladstone Avenue | Ottawa | |
| 79 | Bronson Avenue, Airport Parkway | Macdonald-Cartier International Airport | Ottawa Road 42 (Albert Street) | | Airport Parkway is a controlled access Super 2 freeway that is scheduled to be upgraded to a four lane freeway from Brookfield Road to Ottawa Road 32 (Hunt Club Road). Signed only at major intersections. |
| 81 | Lyon Street | Catherine Street | Ottawa Road 34 (Wellington Street) | Ottawa | One way southbound. |
| 83 | Chamberlain Street, Kent Street | Ottawa Road 79 (Bronson Avenue) | Ottawa Road 34 (Wellington Street) | Ottawa | One way eastbound and northbound. Formerly Highway 17B. |
| 84 | Place d'Orléans Boulevard | Ottawa Road 34 (St. Joseph Boulevard) | Ottawa Road 34 (St. Joseph Boulevard) | Orleans | Crescent serving Place d'Orleans |
| 85 | Milton Road | Ottawa Road 26 (Russell Road) | Ottawa Road 28 (Navan Road) | Cumberland | Formerly Ottawa Road 31. Some maps mislabel Bank Street as 85. |
| 86 | Hope Side Road | Ottawa Road 49 (Eagleson Road) | Ottawa Road 59 (Richmond Road) | | Not listed on many maps as being signed, but adequately signed as Ottawa Road 86. |
| 87 | O'Connor Street | Ottawa Road 83 (Chamberlain Street) | Ottawa Road 34 (Wellington Street) | Ottawa | One way southbound. Formerly Highway 17B. |
| 89 | Metcalfe Street | Isabella Street | Ottawa Road 34 (Wellington Street) | Ottawa | One way northbound. |
| 88 | Palladium Drive, Huntmar Drive | Highway 417 (Queensway) | Ottawa Road 61 (Terry Fox Drive) | Kanata | Western section is a loop |
| 91 | Hawthorne Avenue, Elgin Street | Ottawa Road 72 (Main Street) | Ottawa Road 34 (Wellington Street) | Ottawa | Not shown on any maps |
| 99 | Lees Avenue, King Edward Avenue | Ottawa Road 72 (Main Street) | Sussex Drive | Ottawa | |
| 107 | Uplands Drive | Ottawa Road 79 (Airport Parkway) | Ottawa Road 32 (Hunt Club Drive) | Gloucester | |
| 109 | Riddell Drive | Ottawa Road 9 (Dunrobin Road) | Ottawa Road 21 (6th Line Road) | | Probably no longer numbered. Not signed. |
| 111 | Data Centre Road | Ottawa Road 16 (Heron Road) | Ottawa Road 19 (Riverside Drive) | Ottawa | |
| 114 | Osgoode Main Street | Ottawa Road 19 (River Road) | Ottawa Road 25 (Stagecoach Road) | Osgoode | Well signed. |
| 117 | Madawaska Boulevard, "Highway 17" | Ottawa Road 20 (Kinburn Side Road) | Ottawa/Arnprior Border | Antrim | Was Highway 17 prior to Highway 417 extension into Arnprior. Still signed as Highway 17. |
| 125 | Conroy Road | Ottawa Road 31 (Bank Street) | Ottawa Road 74 (Walkley Road) | Gloucester, Ottawa | |
| 128 | Cyrville Road, Innes Road, Blackburn Bypass | Ottawa Road 26 (St. Laurent Boulevard) | Ottawa Road 30 (Innes Road) | Gloucester | Originally, Ottawa Road 128 was Innes Road west of Cyrville, while 30 followed Cyrville. Concurrent with Innes Road between by-pass and Cyrville. |
| 129 | Vances Side Road | Ottawa Road 9 (Dunrobin Road) | Ottawa Road 21 (Torwood Road) | Torbolton | Probably no longer numbered. Not signed. |
| 174 | Queensway, "Highway 174", or simply "The 174" | Highway 417 | Ottawa/Prescott & Russell County Border | Orleans, Cumberland | Was Highway 17 prior to January 1, 1998. Ottawa's highest numbered regional road and only municipally maintained controlled access freeway. Poorly signed except at interchange on-ramps. Continues east as Prescott & Russell County Road 17 |
| 248 | Hazeldean Road, Robertson Road | Highway 7 | Ottawa Road 16 (Baseline Road) | Bells Corners | Renumbered to 36 |
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