|Existed:||1920 – present|
|West end:||Highway 21 – Goderich|
| Highway 7 – Stratford
Highway 85 – Kitchener
Highway 401 – Cambridge
|East end:||Highway 5 (near Dundas)|
|Major cities:||Stratford, Kitchener, Cambridge, Hamilton|
King's Highway 8, commonly referred to as Highway 8, is a provincially maintained highway in the Canadian province of Ontario. At a length of 138.5 kilometres (86.1 mi), the route is significantly shorter than when it travelled beyond Hamilton to Niagara Falls. However, the Queen Elizabeth Way replaced the role of Highway 8, and it was subsequently transferred from provincial to local jurisdiction. Today the highway connects Hamilton and Cambridge, thereafter continuing through Western Ontario to the community of Goderich on the shores of Lake Huron.
Highway 8 is one of the oldest provincial highways in Ontario, having first been established in 1918. Up until the early 1970s, the highway was much longer than its current length, extending from Goderich through Kitchener-Waterloo, Cambridge, and Hamilton to Niagara Falls. However, in 1970, the Government of Ontario decided that the stretch of Highway 8 between Winona (just east of Hamilton) and Niagara Falls was no longer of major transportation significance, since by this time most traffic used the Queen Elizabeth Way (QEW), just to the north, to go between the two locales. Accordingly, the province downloaded this section of the highway to the newly formed Regional Municipality of Niagara, which designated the road as Regional Road 81. In 1998, the provincial government of Mike Harris carried another downloading of the highway to municipal authorities; this time the section between the town of Peters Corners (near Dundas) and Winona was transferred to the Regional Municipality of Hamilton-Wentworth.
In 2004, extensive improvements were completed around the former obsolete and bottle-necked "half-cloverleaf" interchange of the Conestoga Parkway and Highway 8 in Kitchener. This included a new flyover semi-directional ramp from Conestoga westbound to Highway 8 eastbound, while the ramp in the opposite direction was realigned to allow it to carry two lanes of traffic at a higher speed.
In 2002-2004 the Highway 8 freeway was widened from four to eight lanes from the interchange to just east of Franklin Street, which necessitated moving one retaining wall and a new overpass with Franklin Street. Since 2006, work has been underway to widen the freeway to eight lanes, including the Fairway Road interchange. By 2011, this work had been completed to approximately 1 km. east of the Fairway Road exit. The Grand River construction project aimed at carrying 3 lanes of traffic in each direction was completed in July 2012.
In September 2012, MTO completed the reconstruction of the three-road junction at Peters Corners, the eastern terminus of Highway 8, as a roundabout with separate traffic signals for the northern (Westover Road) and southeastern (Hamilton Road 8) arms.
Highway 8 begins at its western terminus in downtown Goderich, at the junction with Highway 21. It travels eastward as a normal city road, running through Stratford (where it begins overlapping with Highway 7). At New Hamburg, the combined Highway 7/8 becomes a 4-lane controlled-access highway, becoming a freeway just west of Baden, and continues into Kitchener (where the 7/8 freeway is known as the Conestoga Parkway).
As the Conestoga Parkway runs through Kitchener, Highways 7 and 8 split off from one another, with Highway 8 turning southeastward via an interchange. The interchange between Highway 8 and the Conestoga Parkway was opened in 1970. Mainline traffic on Highway 8 heading northwest could continue under the Conestoga, where the route defaults to King Street, to enter downtown Kitchener. The Conestoga east/north of this junction serves as a bypass of King Street.
Highway 8 continues along as four-lane freeway, which is also known as the Freeport Diversion or King Street Bypass, until another junction with King Street East. Originally, the Freeport Diversion ended at an at-grade Y-junction with King Street East, with traffic from the Freeport Diversion treated as the mainline traffic at that interchange. In 1987, the Freeport Diversion was extended to provide a direct freeway link to Highway 401 eastbound with the non-public designation Highway 7187, and the Highway 8 designation continuing along King Street East; the Highway 8 designation was later transferred to the Freeport Diversion. The existing cloverleaf interchange between Highway 401 and King Street East had several ramps realigned to allow connections with the Freeport Diversion, and it continues to serve traffic from eastbound Highway 401.
The historical Highway 8 then enters Cambridge, marked as Waterloo Regional Road 8 within the boundaries of the city, following city streets such as Shantz Hill Road, Fountain Street, King Street, Coronation Boulevard, and Dundas Street. It then continues as a King's Highway out of Cambridge and into Hamilton, meeting with Highway 5 at a roundabout at Peters Corners.
Beyond this point, the road is no longer technically a King's Highway, and is officially designated as Hamilton Road 8, though numerous road signs and local custom still refer to it as Highway 8. From Peters Corners, Highway 8 continues through West Flamborough before turning south to descend the Niagara Escarpment into Dundas. In Dundas, Highway 8 follows King Street East, then turns south onto Main Street. Main Street changes names at Governor's Road to become Osler Drive. Once Highway 8 crosses the boundary into Hamilton proper, the road resumes the name Main Street.
Highway 8 continues as Main Street through the Westdale neighbourhood of Hamilton, passing McMaster University, until it reaches Paradise Road just west of Highway 403. At this point Highway 8 splits into two roads as it passes through the Hamilton downtown core. Highway 8 eastbound follows Main Street, which becomes a multilane one-way street from Paradise Road until its eventual intersection with King Street near Kensington Avenue in East Hamilton. Highway 8 westbound follows King Street, which is also a multilane one-way street between Kensington Avenue and Paradise Road, and then briefly follows Paradise Road itself to reconnect with Main Street. East of the intersection of King Street and Main Street, the two directions of Highway 8 merge, and the highway continues to follow Main Street.
At the meeting of Main St. with Queenston Road, Highway 8 leaves Main Street and follows Queenston Road to continue its eastbound journey. East of Gray Road the designation of Queenston Road is dropped. Thereafter the road is simply named Highway 8 until reaching Winona, where it becomes Niagara Regional Road 81.
The following table lists the major junctions along Highway 8, as noted by the Ministry of Transportation of Ontario. Highway 8 is maintained under a Connecting Link agreement within Goderich, Clinton, Seaforth, Mitchell, and Stratford.
|Huron||Goderich||0.0||0.0||Highway 21||Beginning of Goderich Connecting Link agreement|
|2.1||1.3||End of Goderich Connecting Link agreement|
|Clinton||18.7||11.6||Beginning of Clinton Connecting Link agreement|
|19.9||12.4||Highway 4 – London|
|20.8||12.9||End of Clinton Connecting Link agreement|
|Seaforth Connecting Link agreement|
|Perth||Dublin||43.5||27.0||County Road 180 / County Road 14 North|
|Mitchell||49.9||31.0||Beginning of Mitchell Connecting Link agreement|
|Highway 23 – Listowel|
|52.7||32.7||End of Mitchell Connecting Link agreement|
|Sebringville||63.9||39.7||County Road 135 north|
|Stratford||69.6||43.2||Beginning of Stratford Connecting Link agreement|
|75.4||46.9||Highway 7 west – London||Beginning of Highway 7 concurrency|
|End of Stratford Connecting Link agreement|
|Waterloo||Kitchener||117.2||72.8||Highway 7 east (Conestoga Parkway) – Waterloo, Guelph||Highway 8 exits Conestoga Parkway onto Freeport Diversion; end of Highway 7 concurrency|
|119.4||74.2||Weber Street, Fairway Road|
|121.9||75.7||Regional Road 8 – Cambridge, London||Eastbound exit and westbound entrance; former route of Highway 8|
|123.1||76.5||Regional Road 38 (Sportsworld Drive, Maple Grove Road)|
|125.2||77.8||Highway 401 east – Toronto||Eastbound exit and westbound entrance; Highway 8 is regionally maintained through Cambridge as Regional Road 8.|
|Cambridge||135.6||84.3||Regional Road 43 (Branchton Road)||Highway 8 resumes|
|Hamilton||Rockton||147.4||91.6||Regional Road 552 (Kirkwall Road) – Kirkwall||Beginning of former Highway 52 concurrency|
|Peters Corners||153.6||95.4||Westover Road||End of former Highway 52 concurrency|
|153.8||95.6||Highway 5 east – Burlington, Waterdown|
|Highway 8 continues into Hamilton as Regional Road 8|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- Ministry of Transportation of Ontario, 2004 Annual Average Daily Traffic
- Ontario Highway 8 History - The King's Highways of Ontario
- Contract Management and Operations Branch (2011). Connecting Links (Report). Ministry of Transportation of Ontario. p. 3.
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