Ontario Highway 4
Location of Highway 4 in Southern Ontario
Current route Former route
|Length||100.8 km (62.6 mi)|
|Existed||February 26, 1920–present|
|South end||Highway 3 – St. Thomas|
| Highway 401|
|North end||Highway 8 – Clinton|
|Major cities||St. Thomas, London|
King's Highway 4, also known as Highway 4, is a provincially maintained highway in the Canadian province of Ontario. Originally much longer than its present 100.8 km (62.6 mi) length, more than half of Highway 4 was transferred to the responsibility of local governments in 1998. In 2018, Highway 4 was re-signed and re-routed through London. In its present form, it travels between Highway 3 in Talbotville Royal, north-west of St. Thomas, and Highway 8 in Clinton.
Highway 4 was first designated in 1920, when a 27 km (17 mi) route between Talbotville Royal and Elginfield was assumed by the Department of Highways. Over the next half century it was extended north and east to Highway 24 near Singhampton, and south to Port Stanley.
In its present form, Highway 4 travels through Talbotville Royal, Tempo, London, Northcrest, Uplands, Arva, Birr, Elginfield, Lucan, Clandeboye, Mooresville, Centralia, Exeter, Hay, Hensall, Kippen, Brucefield, Vanastra, and Clinton.
The King's Highway 4 was originally designated in 1920 when the provincial government assumed the road running from Talbotville Royal to Elginfield through London. In 1927, the highway was further extended with the assumption of the road from Elginfield to Clinton. In the 1930s, the highway was again extended as far north as the intersection of Highway 10 in Flesherton, and south to Edith Cavell Boulevard in Port Stanley. In the 1970s, Highway 4 reached its maximum length when it was extended from Flesherton to Singhampton. However, in 1998, the Mike Harris government, seeking to balance the provincial budget, off-loaded responsibility for the Clinton–Singhampton and Talbotville-Port Stanley sections of Highway 4—almost 65% of its total length—back onto municipal governments.
In 2017, the City of London announced that Highway 4 through London would be re-signed and re-routed via Richmond Street, Sunningdale Road, and Wonderland Road, resulting in a short concurrency with Highway 401 between the Colonel Talbot Road and Wonderland Road interchanges.
|Elgin||Talbotville Royal||0.0||0.0||Highway 3 – St. Thomas|
|6.0||3.7||Highway 401 – Windsor, Toronto||Exit 177, ON-4 overlaps with Hwy 401 until Wonderland Rd S.|
|Middlesex||London||8.8||5.5||Wonderland Road South||ON-4 exits and continues northbound along Wonderland Rd S.|
|15.9||9.9||Highway 402 – Sarnia|
|18.1||11.2||Exeter Road||Formerly Highway 135|
|18.4||11.4||Wharncliffe Road S||Former routing of Highway 4 (before Jan. 2018) and Highway 2 along Wharncliffe Rd|
|29.8||18.5||Fanshawe Park Road W||Formerly Highway 22 west|
|34.0||21.1||Richmond St / Sunningdale Rd||Former routing of Highway 4 via Richmond Street south|
|Arva||31.6||19.6||County Road 28 (Medway Road)|
|37.2||23.1||County Road 16 (Ilderton Road)|
|Elginfield||45.4||28.2|| Highway 7 east – St. Marys, Stratford|
County Road 7 west (Elginfield Road)
|Access to Highway 23 via Highway 7 east|
|Clandeboye||54.3||33.7||County Road 28 (Denfield Road)|
|Huron||Centralia||64.2||39.9||County Road 21|
|Exeter||72.4||45.0||County Road 83 (Thames Road)||Formerly Highway 83|
|Hensall||80.3||49.9||County Road 84 (King Street)||Formerly Highway 84|
|Kippen||84.3||52.4||County Road 12 (Kippen Road)|
|Brucefield||90.4||56.2||County Road 3 (Mill Road)|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
|Wikimedia Commons has media related to Ontario Highway 4.|