| Route number | 
Name(s) | 
Western/Southern Terminus | 
Eastern/Northern Terminus | 
Communities | 
Comments | 
|  (West) | 
Michener Road, Farr Avenue | 
Point Abino Road | 
Gorham Road | 
Ridgeway, Crystal Beach | 
Originally included Michener Road, Pleasant Beach Road, and Beach Road from RR 98 (Empire Road) to Point Abino Road; remainder downloaded in 2012 | 
 | 
Dominion Road | 
RR 116 (Gorham Road) | 
Lakeshore Road (Niagara Parkway) | 
Ridgeway, Crystal Beach, Fort Erie | 
Former Highway 3C | 
 | 
Caistorville Road | 
Indian Line (Haldimand County border; continues as Haldimand Road 2) | 
RR 65 (Silver Street) | 
Caistorville | 
 | 
|  (West) | 
Lakeshore Road, Station Road, Wainfleet Concession Road 1 | 
Haldimand County border (continues as Haldimand Road 3) | 
Highway 3 | 
Willow Bay, Long Beach | 
 | 
|  (Centre) | 
Main Street | 
Highway 3 at Port Colborne/Wainfleet boundary | 
Intersection of Highway 3 and Highway 140 | 
Port Colborne | 
Former Highway 3 | 
 | 
Garrison Road | 
Highway 3 and Rosehill Road | 
RR 124 (Central Avenue) | 
Fort Erie | 
Former Highway 3 | 
 | 
Mellanby Avenue, Welland Street | 
RR 3 (Main Street) west of Bridge 19 of Welland Canal | 
RR 3 (Main Street) east of Bridge 19 | 
Port Colborne, Ontario | 
Mellanby Avenue formerly RR 503, Welland Street former part of RR 68 (South) | 
 | 
Wellandport Road | 
Highway 3 | 
RR 27 (Riverside Road) | 
Wellandport | 
Formerly RR 20 before download of Highway 20 | 
|  (West) | 
Killaly Street West | 
Highway 3 | 
RR 3A (Mellanby Avenue) | 
Port Colborne | 
Downloaded 2002, then uploaded back to the Region in 2008 | 
|  (East) | 
Killaly Street East | 
RR 68 (Welland Street) | 
Highway 3 | 
Port Colborne, Gasline | 
Downloaded after 2002 | 
 | 
Caistor Centre Road, Twenty Road, South Grimsby Road 15 | 
RR 65 (Bismark Road) | 
Former Highway 20, now RR 20 | 
Caistor Centre | 
Downloaded after 2002 | 
 | 
Marshagan Road | 
Haldimand County border (continues as Haldimand Road 7) | 
RR 45 (Creek Road) | 
Dunnville (via Haldimand Road 7) | 
Originally numbered RR 545 in original 1969 regional road plan, renumbered later | 
 | 
Grassie Road, Woolverton Road | 
Former Highway 20 (now RR 20) | 
RR 79 (Ridge Road) | 
Grassie | 
Downloaded after 2002 | 
 | 
York Road | 
Haldimand County border (continues as Haldimand Road 9) | 
RR 2 (Caistorville Road) | 
Empire Corners, York (via Haldimand Road 9) | 
Originally numbered RR 502 in original 1969 regional road plan, renumbered later | 
 | 
Casablanca Boulevard | 
RR 81 (Main Street) | 
RR 39 (North Service Road West) | 
Grimsby | 
 | 
 | 
Erie Road | 
Point Abino Road | 
Ridgeway Road | 
Bay Beach, Crystal Beach | 
Downloaded after 2002 | 
 | 
Grimsby Road, Mountain Road, Mountain Street, Christie Street | 
RR 20 (Former Highway 20) | 
Olive Street | 
Grimsby | 
 | 
|  (South) | 
Smithville Road, Townline Road, Canborough Street, Griffin Street South | 
Haldimand County border (continues as Haldimand Road 14) | 
RR 20 (Former Highway 20) | 
Caistor Corners, Smithville | 
 | 
|  (Centre) | 
Station Street, Thirty Road | 
RR 20 (Former Highway 20) | 
RR 73 (Mud Street East) | 
Smithville | 
Originally included Thirty Road north of RR 73, Ridge Road East and Park Road to RR 81 (Main Street East) downloaded after 2002 | 
|  (North) | 
Bartlett Avenue | 
RR 81 (Main Street East) | 
Lake Street | 
Grimsby | 
 | 
|  (Original) | 
Garrison Road | 
Highway 3 at RR 126 (Concession St) | 
RR 124 (Centre St) | 
Fort Erie | 
Part of original 1969 regional road grid, renumbered as eastern part of RR 3 sometime later | 
 | 
Robinson Road | 
Haldimand County border (continues as Haldimand Road 15) | 
RR 63 (Canborough Road) | 
Dunnville (via Haldimand Road 15) | 
Originally numbered RR 563 in original 1969 regional road plan, renumbered later | 
 | 
Port Davidson Road | 
RR 63 (Canborough Road) | 
RR 14 (Twenty Road) | 
Port Davidson, Smithville | 
Downloaded after 2002 | 
 | 
Bertie Street | 
Queen Elizabeth Way | 
Niagara Parkway | 
Fort Erie | 
Downloaded after 2002 | 
 | 
Mountain Road, Ontario Street | 
RR 73 (Fly Road) | 
RR 39 (North Service Road) | 
Beamsville | 
Once extended south on Mountain Road and Beamsville Road to RR 69 (Twenty Mile Creek Road) | 
 | 
Gilmore Road | 
Queen Elizabeth Way | 
Niagara Parkway | 
Fort Erie | 
 | 
|  (West) | 
Highway 20, West Street, Griffin Street North. St. Catharines Street, Highway 20, Bismark Road, Canboro Road | 
Hamilton border (continues as Hamilton Road 20) | 
Intersection of Highway 58 and Highway 20 | 
Smithville, Fonthill, Allanburg | 
Former Highway 20.  Offers a scenic route in comparison to the Queen Elizabeth Way. Concurrent with Highway 58 between Highway 406 and Centre Street. | 
|  (East) | 
Lundy's Lane, Ferry Street | 
Intersection of Highway 20 and RR 70 (Thorold Townline Road) | 
RR 102 (Stanley Avenue) | 
Niagara Falls | 
Former part of RR 51, renumbered after downloading of Highway 20 | 
 | 
Bowen Road, Philips Street | 
RR 116 (Stevensville Road) | 
Niagara Parkway | 
Stevensville, Fort Erie | 
 | 
|  (South) | 
Campden Road | 
RR 69 (Twenty Mile Creek Road) | 
RR 73 (Fly Road) | 
Campden | 
Downloaded after 2002 | 
|  (North) | 
Merritt Road | 
RR 81 (King Street) | 
South Service Road | 
Lincoln | 
Downloaded before 2002 | 
 | 
Forks Road | 
Highway 3 and RR 24 (Vineland Townline Road) | 
Highway 58 | 
Originally extended to RR 68 (Kingsway) in Dain City | 
 | 
Vineland Townline Road, Victoria Avenue | 
Highway 3 and RR 23 (Forks Road) | 
RR 39 (North Service Road) | 
Chambers Corners, Vineland | 
Part of route between Highway 3 and RR 27 was formerly a portion of Highway 3A | 
 | 
Netherby Road | 
RR 84 (Doan's Ridge Road) | 
Niagara Parkway | 
Welland, Netherby, Snyder | 
 | 
 | 
Jordan Road | 
RR 81 (King Street) | 
RR 39 (North Service Road) | 
Jordan | 
 | 
 | 
Wellandport Road, "Regional Road 27" (formerly River Road), Riverside Drive, West Main Street, East Main Street, Shisler Road | 
RR 20 (Former Highway 20) and RR 65 (Bismark Road) | 
RR 98 (Montrose Road) | 
Bismark, Wellandport, Welland | 
Section between RR 24 (Vineland Townline Road) and RR 54 (Prince Charles Drive) was formerly a portion of Highway 3A.  Section between RR 20 and RR 24 was formerly Highway 57 | 
|  (South) | 
Balfour Road, Metler Road, Cream Street, Sixteen Road, Effingham Street | 
RR 63 (Canborough Road) | 
RR 69 (Pelham Road) | 
Fenwick, North Pelham | 
Downloaded after 2002 | 
|  (North) | 
Fifth Street Louth | 
RR 69 (Pelham Road) | 
RR 81 (St. Paul Street West) | 
St. Catharines | 
 | 
 | 
Webber Road, Lincoln Street | 
RR 24 (Vineland Townline Road) | 
RR 54 (Prince Charles Drive) | 
Welland | 
Before 2002, continued east to RR 62 (Memorial Park Drive) | 
 | 
Lakeshore Road, Golf Course Road | 
RR 3 (Lakeshore Road at Station Road) | 
Highway 3 | 
Burnaby | 
Downloaded after 2002 | 
 | 
Broadway Avenue, Ontario Road | 
RR 27 (Riverside Drive) | 
RR 62 (Memorial Park Drive) | 
Welland | 
Downloaded after 2002 | 
 | 
Effingham Street | 
RR 20 (Former Highway 20) | 
RR 28 (Sixteen Road at Effingham Street) | 
Ridgeville, Effingham | 
Downloaded after 2002 | 
 | 
Humberstone Road | 
Feeder Road (Welland) | 
Highway 58, Highway 58A and RR 54 (Prince Charles Drive) | 
Welland | 
 | 
|  (Old) | 
Humberstone Road | 
Highway 58A | 
RR 60 (Southworth Street) | 
Welland | 
Downloaded after 2002 | 
 | 
Seventh Street Louth | 
RR 81 (St. Paul Street West) | 
RR 87 (Lakeshore Road) | 
St. Catharines | 
 | 
 | 
Dunn Street | 
RR 104 (Dorchester Road) | 
RR 102 (Stanley Avenue) | 
Niagara Falls | 
Downloaded after 2002 | 
 | 
South Pelham Road | 
RR 29 (Webber Road) | 
RR 41 (Woodlawn Road) | 
Welland, Fonthill | 
Originally extended to RR 20 via Pelham Street South (downloaded 2006) | 
 | 
Merritt Road | 
RR 50 (Merrittville Highway) | 
Highway 406 | 
Welland | 
Former part of Highway 58 / Highway 406 concurrency | 
|  (Old) | 
Murray Street | 
RR 102 (Stanley Avenue) | 
Niagara Parkway | 
Niagara Falls | 
Downloaded after 2002 | 
 | 
Martindale Road | 
RR 77 (Fourth Avenue) and RR 72 (Louth Street) | 
RR 87 (Lakeshore Road) | 
St. Catharines | 
 | 
|  (West) | 
North Service Road | 
Hamilton border | 
Olive Street | 
Grimsby | 
 | 
|  (East) | 
North Service Road | 
Grimsby-Lincoln border | 
Third Street Louth | 
Beamsville, St. Catharines | 
 | 
|  (Old) | 
Clifton Hill | 
RR 51 (Victoria Avenue) | 
Niagara Parkway | 
Niagara Falls | 
Downloaded after 2002 | 
|  (West) | 
South Service Road | 
Hamilton border | 
RR 12 (Christie Street) | 
Grimsby | 
 | 
|  (Centre) | 
South Service Road | 
Nelles Road North | 
Twenty-first Street Louth | 
Grimsby, Beamsville, Jordan Harbour | 
 | 
|  (East) | 
Bayview Boulevard, South Service Road | 
Dead end at Jordan Harbour | 
RR 38 (Martindale Road) | 
Jordan Station, St. Catharines | 
 | 
|  (Old) | 
Niagara Street | 
RR 27 (West Main Street) | 
Then Highway 58 (Thorold Road at Niagara Street) | 
Welland | 
Renumbered to RR 50 after downloading of parts of Highway 58 in early 1970s | 
|  (Original) | 
Queen Street | 
RR 51 (Victoria Avenue) | 
Niagara Parkway | 
Niagara Falls (downtown) | 
Part of original 1969 regional road grid, downloaded sometime later | 
 | 
Woodlawn Road | 
RR 36 (South Pelham Road) | 
Highway 406 | 
Welland | 
Section Between Seaway Dr. and Highway 406 formerly unsigned Highway 7236 | 
 | 
Ontario Street | 
RR 91 (Westchester Avenue) and RR 81 (St. Paul Street/St. Paul Street West) | 
RR 87 (Lakeshore Road) and RR 44 (Lakeport Road) | 
St. Catharines | 
 | 
 | 
Bridge Street | 
RR 102 (Stanley Avenue) | 
Niagara Parkway at the Whirlpool Rapids Bridge | 
Niagara Falls | 
 | 
 | 
Lake Street, Lakeport Road | 
Queen Elizabeth Way (Exit 46) | 
RR 87 (Lakeshore Road at Lakeport Road) and RR 42 (Ontario Street) | 
Port Dalhousie, St. Catharines | 
Downloaded after 2002 | 
 | 
Creek Road | 
RR 63 (Canborough Road) | 
RR 27 (Riverside Road) | 
Wellandport | 
 | 
 | 
Geneva Street | 
Interchange with Highway 406 and RR 91 (Westchester Avenue) | 
RR 581 (Church Street) | 
St. Catharines | 
Originally extended north to RR 87 (Lakeshore Road) | 
 | 
Lyons Creek Road | 
RR 98 (Montrose Road) | 
RR 116 (Sodom Road) | 
Chippawa | 
Once extended west on Biggar Road to RR 84 (Moyer Road) | 
|  (West) | 
Carl Road | 
RR 84 (Moyer Road) | 
RR 98 (Montrose Road) | 
Crowland Twp. | 
Rerouted along Biggar Road before 1983 | 
 | 
Niagara Street | 
Interchange with Highway 406, RR 46 (Geneva Street) and RR 91 (Westchester Avenue) | 
RR 87 (Lakeshore Road) | 
St. Catharines | 
 | 
 | 
McLeod Road, Marineland Parkway | 
Queen Elizabeth Way | 
RR 102 (Stanley Avenue) | 
Niagara Falls | 
Originally extended east to Portage Road then along Portage Road to RR 116 (Main Street); extended west to RR 70 (Thorold Townline Road) | 
 | 
Niagara Street, Merritville Highway, Glenridge Avenue | 
RR 27 (West Main Street) | 
RR 91 (Westchester Avenue) | 
Welland, Thorold, St. Catharines | 
 | 
 | 
Lundy's Lane, Ferry Street, Victoria Avenue | 
Highway 20 and RR 70 (Thorold Townline Road) | 
Niagara Parkway | 
Niagara Falls | 
Renumbered as RR 20 west of RR 102 (Stanley Avenue), downloaded remainder after 2002 | 
 | 
Richmond Street, Ormond Street, Merritt Street, Hartzel Road, Bunting Road | 
RR 56 (Collier Road) | 
RR 87 (Lakeshore Road) | 
Thorold, Merritton, St. Catharines, Port Weller | 
Downloaded after 2002 | 
 | 
Niagara Falls Road, Beaverdams Road | 
RR 553 (Allanburg Road) | 
RR 20 (Lundy's Lane) | 
Thorold South, Niagara Falls | 
Downloaded after 2002 | 
 | 
Prince Charles Drive, Rice Road | 
Intersection of Highway 58, Highway 58A, and RR 33 (Humberstone Road) | 
RR 20 (Former Highway 20) | 
Welland, Fonthill | 
Section between RR 41 and RR 20 downloaded to local municipalities between 2002–2006 | 
|  (Original) | 
Richmond Street | 
RR 56 (Collier Road) | 
(Then) Highway 58 (Ormond St) | 
Thorold | 
Original part of 1969 regional road grid, later renumbered as part of RR 52 when Highway 58 along Ormond St was downloaded to the region | 
 | 
Niagara Stone Road Mississagua Street | 
RR 81 (Queenston Road) and RR 70 (Taylor Road) | 
RR 87 (Mary Street) | 
Homer, Virgil, Niagara-on-the-Lake | 
Former Highway 55 | 
 | 
Collier Road, Burleigh Hill Drive | 
RR 67 (Beaverdams Road) | 
RR 89 (Glendale Avenue) | 
Thorold, St. Catharines | 
Downloaded in 2002, then uploaded back to the Region in 2007 | 
 | 
Thorold Stone Road | 
RR 70 (Thorold Townline Road) east of Highway 58 | 
RR 102 (Stanley Avenue) | 
Thorold, Niagara Falls | 
 | 
 | 
Homer Road | 
RR 89 (Glendale Avenue) | 
RR 70 (Taylor Road) | 
Niagara College Glendale Campus | 
Formerly known as Coon Road | 
 | 
Morrison Street | 
RR 104 (Dorchester Avenue) | 
Zimmerman Avenue | 
Niagara Falls | 
Downloaded after 2002 | 
 | 
Southworth Street, Crowland Avenue | 
RR 33 (Humberstone Road) | 
RR 27 (East Main Street) | 
Welland | 
Downloaded after 2002 | 
 | 
Townline Road, Portage Rd. | 
RR 100 (Four Mile Creek Road) | 
Niagara Parkway | 
St. David's, Queenston | 
Extended onto Portage Rd. After the removal of the 405 and Niagara Parkway interchange in 2006. | 
 | 
Memorial Park Drive, Wellington Street | 
RR 31 (Ontario Road) | 
RR 27 (East Main Street) | 
Welland | 
Downloaded after 2002 | 
|  (West) | 
Canborough Road | 
Haldimand County border (continues as Haldimand Road 63) | 
RR 24 (Vineland Townline Road) | 
Wellandport, Fenwick, Ridgeville, Fonthill | 
Originally extended east to RR 36 (Pelham Street South) via Church Hill | 
|  (Centre) | 
Port Robinson Road | 
RR 36 (Pelham Street South) | 
Highway 406 | 
Fonthill, Port Robinson | 
Downloaded after 2002.  Originally extended across Bridge 12 of the Welland Canal until 1974 when bridge was destroyed. | 
|  (East) | 
Chippawa Creek Road | 
RR 82 (Allanport Road) | 
RR 98 (Montrose Road) | 
Port Robinson | 
Originally extended west across Bridge 12 of the Welland Canal until 1974 when bridge was destroyed. | 
 | 
Steele Street, Westside Road | 
RR 66 (Sugarloaf Street) | 
Highway 3 at Highway 58 | 
Port Colborne | 
Downloaded after 2002 | 
 | 
Bismark Road | 
Hamilton border (continues as Hamilton Road 65) | 
Intersection of RR 20 (Former Highway 20) and RR 27 (Former Highway 57) | 
Bismark | 
 | 
 | 
Sugarloaf Street, King Street | 
RR 64 (Steele Street) | 
RR 3 (Main Street West) | 
Port Colborne | 
Downloaded after 2002 | 
 | 
Beverdams Road, Pine Street | 
RR 50 (Merrittville Highway) | 
Highway 58 | 
Thorold | 
Originally extended north to RR 52 (Richmond Street) | 
 | 
King Street | 
RR 527 (Division Street) | 
RR 27 (East Main Street) | 
Welland | 
Originally included King Street down to RR 31 (Ontario Street), plus Canal Bank Street & Kingsway from RR 31 to RR 23 (Forks Road).  Remainder downloaded after 2002. | 
|  (South) | 
Clarence Street, Welland Street | 
RR 64 (Steele Street) | 
RR 3 (Main Street East) | 
Port Colborne | 
Downloaded after 2002.  Part of road currently part of RR 3A. | 
 | 
Twenty Mile Creek Road, Twenty Road, Pelham Road, | 
RR 20 (Former Highway 20) | 
Intersection with RR 89 (Glendale Avenue) | 
St. Ann's, St. Catharines | 
Originally extended east to RR 81 (St. Paul Street West) | 
 | 
Taylor Road, Thorold Townline Road | 
RR 63 (Chippawa Creek Road) | 
Intersection of RR 81 (Queenston Road) and RR 55 (Niagara Stone Road) | 
Homer | 
 | 
 | 
Sir Isaac Brock Way (formerly St. David's Road) | 
RR 50 (Merrittville Highway at Glenridge Avenue) | 
Highway 406 | 
Brock University area of St. Catharines | 
Originally extended east to RR 52 (Ormond Street) | 
 | 
Louth Street | 
RR 69 (Pelham Road) | 
RR 77 (Fourth Avenue) and RR 38 (Martindale Road) | 
St. Catharines | 
 | 
 | 
Mud Street, Fly Road | 
Hamilton border (once continued as Hamilton-Wentworth Road 411) | 
RR 24 (Victoria Avenue) | 
Grassie, Grimsby Centre, Campden | 
 | 
 | 
Twenty-First Street Louth, Sixth Avenue Louth | 
RR 669 (Eighth Avenue Louth) | 
RR 24 (Victoria Avenue) | 
Balls Falls | 
Downloaded before 2006 | 
 | 
Fourth Avenue, Welland Avenue | 
RR 26 (Jordan Road) | 
Queen Elizabeth Way | 
Jordan, St. Catharines | 
Originally extended east to RR 52 (Bunting Road) | 
 | 
Chippawa Road, Humberstone Concession 2 | 
RR 3 (Main Street) | 
RR 68 (Welland Street) | 
Port Colborne | 
Part of original 1969 regional road grid, downloaded sometime later | 
 | 
Ridge Road | 
Hamilton border (once continued as Hamilton-Wentworth Road 425) | 
RR 14 (Park Road) | 
Grimsby | 
Downloaded after 2002 | 
 | 
Elm Street | 
RR 66 (Sugarloaf Street) | 
RR 23 (Forks Road) | 
Port Colborne, Dain City | 
Downloaded after 2002 | 
 | 
Main Street East, Main Street West, King Street, St. Paul Street, Queenston Street, York Road | 
Hamilton Boundary (Continues as Hamilton Road 8) | 
Niagara Parkway | 
Grimsby, Beamsville, Vineland, Jordan, St. Catharines, Homer, St. David's, Queenston | 
Former Highway 8 & Highway 8A.  Includes part of original QEW alignment built before the Garden City Skyway was constructed.  Portion between Regional Road 42 and Regional Road 91 downloaded after 2002. | 
 | 
Allanport Road | 
RR 63 (Chippawa Creek Road) | 
Highway 20, Highway 58 and RR 20 (Lundy's Lane) | 
Allanburg, Port Robinson | 
 | 
 | 
Carlton Street, Carlton Road | 
RR 42 (Ontario Street) | 
RR 55 (Niagara Stone Road) | 
St Catharines | 
 | 
 | 
Miller Road, Doan's Ridge Road, Moyer Road | 
Highway 3 | 
RR 63 (Chippawa Creek Road) | 
Gasline, Cook's Mills | 
Originally extended south to RR 5 (Killaly Street East). | 
 | 
East-West Line | 
RR 87 (Lakeshore Road) | 
Niagara Parkway | 
Virgil, Niagara-on-the-Lake | 
Downloaded after 2002 | 
 | 
Stewart Road | 
RR 55 (Niagara Stone Road) | 
RR 87 (Lakeshore Road) | 
Homer | 
 | 
 | 
Lakeshore Road, Main Street, Lakeport Road, Lakeshore Road, Mary Street, King Street, Picton Street, Queen's Parade | 
RR 34 (Seventh Street Louth) | 
Niagara Parkway | 
Port Dalhousie, St. Catharines, Port Weller, Niagara-on-the-Lake | 
 | 
 | 
Seaway Haulage Road | 
RR 83 (Carlton Road) | 
Read Road | 
St. Catharines | 
Only public open section of a former cargo haulage route to the east of the Welland Canal. | 
 | 
Glendale Avenue | 
RR 69 (Pelham Road) and RR 72 (Louth Street) | 
Queen Elizabeth Way, RR 81 (York Road) | 
St. Catharines, Merritton | 
 | 
 | 
Airport Road | 
RR 81 (York Road) | 
RR 55 (Niagara Stone Road) | 
Niagara-on-the-Lake | 
Serves St. Catharines/Niagara District Airport | 
 | 
Westchester Avenue | 
RR 81 (St. Paul Street) | 
RR 81 (Queenston Road) | 
St. Catharines | 
Originally extended to RR 52 (Bunting Road) via Eastchester Avenue | 
 | 
Scott Street | 
RR 44 (Lake Street) | 
RR 52 (Bunting Road) | 
St. Catharines | 
Downloaded after 2002. | 
 | 
Linwell Road | 
RR 42 (Ontario Street) | 
RR 52 (Bunting Road) | 
St. Catharines | 
Downloaded after 2002. | 
 | 
Wilhelm Road, Forkes Road, Schihl Road, Montrose Road | 
Highway 3 | 
RR 101 (Mountain Road) | 
Niagara Falls | 
Originally extended south on Empire Rd. to RR1 (Beach Rd.) before 2002 downloading | 
 | 
Quaker Road | 
RR 36 (Pelham Street South) | 
RR 50 (Niagara Street) | 
Fonthill, Welland | 
Downloaded after 2002 | 
 | Niagara Regional Road 100 |  
  | 
Four Mile Creek Road | 
RR 101 (Mountain Road) | 
RR 55 (Niagara Stone Road) | 
Virgil, St. David's, Niagara Falls | 
Former Highway 8. Originally extended south to RR 49 (McLeod Road) and north to RR 87 (Lakeshore Road) | 
 | Niagara Regional Road 101 |  
  | 
Mountain Road | 
RR 70 (Taylor Road) | 
RR 102 (Stanley Avenue) | 
Niagara Falls | 
 | 
 | Niagara Regional Road 102 |  
  | 
Stanley Avenue | 
RR 47 (Lyons Creek Road) | 
RR 61 (Townline Road) at Highway 405 | 
Niagara Falls | 
Passes by Marineland | 
| Niagara Regional Road 104 |  
  | 
Dorchester Road | 
RR 49 (McLeod Road) | 
RR 101 (Mountain Road) | 
Niagara Falls | 
Downloaded after 2002 | 
| Niagara Regional Road 106 |  
  | 
Niagara Concenssion 7 | 
RR 81 (York Road) | 
RR 55 (Niagara Stone Road) | 
Niagara-on-the-Lake | 
Downloaded after 2002 | 
| Niagara Regional Road 108 |  
  | 
Portage Road, Main Street | 
RR 20 (Ferry Street) | 
RR 100 (Portage Road at Drummond Street) and RR 57 (Thorold Stone Road) | 
Niagara Falls | 
Downloaded after 2002 | 
| Niagara Regional Road 112 |  
  | 
Point Abino Road | 
Michener Road | 
Highway 3 | 
 | 
Originally extended north to RR 25 (Netherby Road) and south to RR 11 (Erie Road); remainder downloaded in 2012 | 
| Niagara Regional Road 114 |  
  | 
Niagara Concession 1 Road | 
RR 81 (York Road) | 
RR 85 (East-West Line) | 
Queenston, Niagara-on-the-Lake | 
Downloaded after 2002 | 
 | Niagara Regional Road 116 |  
  | 
Gorham Road, Stevensville Road, Sodom Road | 
RR 1 (Dominion Road) | 
RR 47 (Lyons Creek Road) | 
Ridgeway, Stevensville, Chippawa | 
Originally extended south to RR 11 (Erie Road) and north along Main Street to Niagara Parkway at RR 49 (Marineland Parkway); portion between Farr Avenue and Dominion Road downloaded in 2012 | 
| Niagara Regional Road 118 |  
  | 
Pettit Road | 
Highway 3 | 
RR 19 (Gilmore Road) at Queen Elizabeth Way | 
Fort Erie | 
Downloaded after 2002 | 
| Niagara Regional Road 118 |    (Old) | 
Graeber Avenue, Ridge Road South, Thunder Bay Road, Prospect Point Road | 
RR 116 (Ridgeway Road) | 
RR 1 (Dominion Road) | 
Crystal Beach, Ridgeway | 
Downloaded before 2002 | 
| Niagara Regional Road 120 |  
  | 
Stonemill Road, Ridgemount Road | 
RR 1 (Dominion Road) | 
RR 21 (Bowen Road) | 
Fort Erie | 
Downloaded after 2002 | 
 | Niagara Regional Road 122 |  
  | 
Thompson Road, Helena Street | 
RR 1 (Dominion Road) | 
RR 21 (Bowen Road at Phipps Street) | 
Fort Erie | 
 | 
 | Niagara Regional Road 124 |  
  | 
Central Avenue | 
Niagara Parkway south of RR 3 (Garrison Road) | 
Niagara Parkway north of RR 21 (Phipps Street) | 
Fort Erie | 
First exit (Toronto-bound on Queen Elizabeth Way) / Last Exit (Fort Erie/Buffalo-bound) | 
 | Niagara Regional Road 126 |  
  | 
Concession Road | 
RR 3 (Garrison Road) | 
RR 19 (Gilmore Road) | 
Fort Erie | 
Downloaded after 2002 | 
| Niagara Regional Road 140 |  
  | 
Elizabeth Street | 
RR 5 (Killaly Street East) | 
Highway 3 at Highway 140 | 
Port Colborne | 
Southern extension of Highway 140.  Downloaded after 2002 | 
| Niagara Regional Road 216 |  
  | 
Sixteen Road | 
RR 24 (Vineland Townline Road) | 
RR 28 (Cream Street at Sixteen Road) | 
North Pelham | 
Downloaded after 2002.  Spur route of RR 28. | 
 | 
Roberts Street, Newman Hill, Falls Avenue | 
Highway 420 and RR 102 (Stanley Avenue) | 
Rainbow Bridge | 
Niagara Falls | 
Former part of Highway 420, connecting the QEW to the Rainbow Bridge | 
| Niagara Regional Road 503 |  
  | 
Mellanby Avenue | 
RR 3 (Main Street) | 
RR 68 (Welland Street) | 
Port Colborne | 
Renumbered as part of RR 3A after 2002. | 
| Niagara Regional Road 512 |  
  | 
Livingston Avenue | 
RR 10 (Casablanca Boulevard) | 
RR 81 (Main Street) | 
Grimsby | 
Spur of RR 81 | 
| Niagara Regional Road 514 |  
  | 
Thirty Road | 
RR 14 (Thirty Road at Ridge Road) | 
RR 81 (King Street) | 
Beamsville | 
Spur of RR 14.  Downloaded after 2002 | 
 | Niagara Regional Road 525 |  
  | 
Townline Tunnel Road | 
Highway 58A | 
RR 25 (Netherby Road) east of RR 84 (Doan's Ridge Road) | 
Welland | 
Spur of RR 25 | 
| Niagara Regional Road 527 |  
  | 
Division Street, Burger Street | 
RR 27 (West Main Street) and RR 50 (Niagara Street) | 
RR 27 (East Main Street) | 
Welland | 
Eastbound portion of one-way pair (along with RR 27) through downtown Welland | 
| Niagara Regional Road 529 |  
  | 
River Road, Effingham Street | 
Welland-Port Colborne Airport | 
RR 29 (Webber Road) | 
Welland | 
Spur of RR 29.  Connects to Niagara Central Airport | 
| Niagara Regional Road 538 |  
  | 
Thorold Road | 
RR 36 (South Pelham Road) | 
RR 50 (Niagara Street) | 
Welland | 
Downloaded after 2002. | 
| Niagara Regional Road 549 |  
  | 
Main Street, Bridgewater Street | 
RR 49 (Portage Road) at RR 116 (Main Street) | 
Niagara Parkway | 
Chippawa | 
One-way streets. Main St. northbound; Bridgewater St. southbound. Later renumbered as an extension of RR 116? | 
| Niagara Regional Road 553 |  
  | 
Allanburg Road | 
Highway 58 | 
RR 53 (Niagara Falls Road) | 
Thorold South | 
Spur of RR 53.  Downloaded after 2002 | 
| Niagara Regional Road 569 |  
  | 
St. Ann's Road | 
RR 20 (Former Highway 20) | 
RR 69 (Twenty Mile Creek Road) | 
St. Ann's | 
Spur of RR 69.  Downloaded after 2002 | 
| Niagara Regional Road 575 |  
  | 
Glen Road, Nineteenth Street Louth | 
RR 75 (Twenty-First Street Louth) | 
RR 81 (King Street) | 
Balls Falls, Jordan | 
Spur of RR 75.  Downloaded before 2002 | 
| Niagara Regional Road 581 |  
  | 
Church Street | 
RR 48 (Geneva Street) | 
RR 46 (Niagara Street) | 
St. Catharines | 
Westbound portion of one-way pair (along with RR 81) through downtown St. Catharines.  Originally extended west along Church Street and King Street to RR 42 (Ontario Street). | 
| Niagara Regional Road 612 |  
  | 
Ontario Street | 
RR 81 (Main Street) | 
Queen Elizabeth Way | 
Grimsby | 
Spur of RR 14, originally part of 1969 regional road plan, downloaded later | 
| Niagara Regional Road 614 |  
  | 
Townline Road | 
RR 14 (Townline Road at Canborough Street) | 
RR 20 (Former Highway 20) | 
Smithville | 
Spur of RR 14 | 
| Niagara Regional Road 627 |  
  | 
O'Reilly's Road | 
RR 27 (Riverside Road) | 
RR 529 (River Road) | 
Welland | 
Spur of RR 27.  Connects to Niagara Central Airport | 
| Niagara Regional Road 669 |  
  | 
Eighth Avenue Louth | 
RR 24 (Victoria Avenue) | 
RR 69 (Twenty Road) | 
 | 
Spur of RR 69 | 
| Niagara Regional Road 675 |  
  | 
Twenty-first Street Louth | 
RR 75 (Twenty-first Street Louth at Sixth Avenue Louth) | 
RR 575 (Glen Road) | 
Ball's Falls | 
Short spur route of RR 75.  Downloaded before 2002 | 
| Niagara Regional Road 681 |  
  | 
King Street, William Street | 
RR 42 (Ontario Street) | 
St. Paul Street | 
St. Catharines | 
Northbound portion of one-way pair (along with RR 42) through downtown St. Catharines. | 
| Niagara Regional Road 714 |  
  | 
Park Road | 
RR 73 (Mud Street) | 
RR 79 (Ridge Road East) at RR 14 (Park Road) | 
Grimsby | 
Spur of RR 14.  Downloaded after 2002 | 
| Niagara Regional Road 801 |  
  | 
Brookfield Road | 
Highway 3 (Garrison Road) | 
RR 25 (Netherby Road) | 
Gasline, Port Colborne | 
Part of original 1969 regional road grid, downloaded sometime later | 
| Niagara Regional Road 802 |  
  | 
Point Abino Road | 
Highway 3 (Garrison Road) | 
RR 25 (Netherby Road) | 
 | 
Part of original 1969 regional road grid, renumbered as part of RR 112 later | 
| Niagara Regional Road 803 |  
  | 
Ridge Road | 
Highway 140 | 
RR 84 (Doan's Ridge Road) | 
Welland, Cooks Mills | 
Part of original 1969 regional road grid, downloaded sometime later | 
|   Former Route |