Hwy 48B Sign Graphic Hwy 48B Title Graphic Hwy 48B Sign Graphic   

Ontario Highway 48B Quick Facts:
  • Years in Existence: 1966-1978
  • Current Status: Decommissioned
  • Current Names: Sideroad 17 & Durham Road 23
  • Location: Southern Ontario
  • Counties Served: Durham
  • Towns Served: Beaverton
  • Southern Terminus: Hwy 48 - South of Beaverton
  • Northern Terminus: Hwy 12 & Hwy 48 - North of Beaverton
  • Length in 1978: 11.7 km / 7.3 miles
HWY 48B ROUTE MARKER - © Josh Anderchek
King's Highway 48B Sign
© Josh Anderchek

History of King's Highway 48B:

King's Highway 48B was a Business Loop in the former County of Ontario which passed through the Village of Beaverton during the 1960s and 1970s. The highway was created in 1966, when Highway 48 was relocated onto a new route which bypassed Beaverton entirely. Unlike many other Business Loops established along Ontario's King's Highways, Highway 48B was not created through a simple renumbering of the Old Highway 48 route through Beaverton. In fact, a significant portion of the Highway 48B Business Loop actually followed the original route of Highway 12. Highway 48B began where the new Highway 48 Bypass joined the old route of Highway 12 south of Beaverton. From this point, Highway 48B ran northerly along the bypassed route of Highway 12, where it joined the original route of Highway 48 northeast of Port Bolster. From there, Highway 48B curved northeasterly onto Beach Road (Old Highway 12 & Old Highway 48) and went through Downtown Beaverton along Osborne Street, Simcoe Street and Mara Road. Highway 48B ended several kilometres north of Beaverton, where the Beaverton Business Loop joined the Highway 12 & Highway 48 Bypass between Beaverton and Gamebridge (See Map).

As established in 1966, Highway 48B was under provincial jurisdiction outside of the incorporated limits of the Village of Beaverton. Through the Village of Beaverton, Highway 48B was designated as a Municipal Connecting Link for a distance of approximately 1 1/4 miles and was thus under municipal jurisdiction within the village limits. The Municipal Connecting Link through Beaverton was designated by an Order-in-Council in 1959, while the highway route through town was still known as Highway 12. This Municipal Connecting Link began where Osborne Street entered the southern village limits at Murray Street and extended northeasterly through the village centre via Osborne Street, Simcoe Street and Mara Road. Provincial jurisdiction over Highway 48B resumed along Mara Road at the north limits of the village, which were located just north of Franklin Street when the designation took place in 1959. However, the Village of Beaverton's limits were expanded slightly during the 1960s. As a result, jurisdiction over two short provincially-owned sections of Highway 48B lying immediately north and south of the old village limits were transferred over to municipal control. Provincial jurisdiction over Highway 48B from the new village limits at Thorah Concession Road 5 and the old village limits at Murray Street, along with another short section of Highway 48B from the former village limits near Franklin Street to the new village limits at the White's Creek Bridge, were transferred to the Village of Beaverton by virtue of an Order-in-Council, effective September 18, 1971. These two transferred sections of Highway 48B were added to the Beaverton Municipal Connecting Link route by an Order-in-Council, effective November 3, 1971. The Village of Beaverton was subsequently amalgamated with the old Townships of Thorah and Brock to form the new Township of Brock.

By the late 1970s, the province sought to divest itself of the old highway route through Beaverton, as it essentially served local traffic only. The Highway 48B Business Loop survived until 1978, when the entire route was decommissioned as a King's Highway. Jurisdiction over the provincially-controlled sections of Highway 48B outside of the Beaverton's former village limits was transferred to the Regional Municipality of Durham and the Township of Brock, effective July 12, 1978. Most of the old Highway 48B route is now known as Durham Regional Road 23. However, the north-south section that had initially been a part of the Old Highway 12 route approaching Beaverton from Sunderland was renamed as Sideroad 17. Within the former limits of the Village of Beaverton, the Highway 48B Municipal Connecting Link designation was formally revoked by an Order-in-Council, effective November 15, 1978. The Highway 48B designation was permanently retired and never used again for an Ontario highway route number.


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