Hwy 100 #1 Sign Graphic Hwy 100 #1 Title Graphic Hwy 100 #1 Sign Graphic   

Ontario Highway 100 (#1) Quick Facts:
  • Years in Existence: 1941-1962
  • Current Status: Renumbered as King's Highway 19 in 1962
  • Current Name: Oxford Road 119
  • Location: Southern Ontario
  • Counties Served: Oxford & Perth
  • Towns Served: Thamesford & St. Marys
  • Southern Terminus: Hwy 2 - Thamesford
  • Northern Terminus: Hwy 7 - St. Marys
  • Length in 1962: 24.6 km / 15.3 miles
HWY 100 ROUTE MARKER - © Cameron Bevers
King's Highway 100 Sign © Cameron Bevers

History of King's Highway 100 (#1):

King's Highway 100 was a collector highway in Oxford and Perth Counties, which ran from the Highway 2 Junction in Thamesford to the Highway 7 Junction in St. Marys. The highway was one of only a handful of King's Highways designated or opened during World War II. In May 1940, a Preliminary Route Plan was prepared which indicated the Ontario Department of Highways' intention to assume the existing Thamsford-St. Marys Road as a new King's Highway. The highway was acquired and designated as Highway 100 on January 15, 1941. This route was the first provincial highway in Ontario to be assigned a three-digit route number. Initially, the highway was gravel-surfaced from end-to-end. In 1960, a portion of Highway 100 was paved from Thamesford to Kintore. In 1962, a major route renumbering took place in the Woodstock and St. Marys area, which resulted in the entire route of Highway 100 being re-designated as Highway 19. A different, unrelated Highway 100 existed near London from 1977 until 1993.





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