the Eighth Concession at the border with Markham township. These improvements were supervised by residents Peter Secor, Richard Houck and Robert Armstrong. By 1847, the section between Scarborough and Markham had become known as the Scarborough and Markham Road. On July 28 of that year, the parliament of the Province of Canada passed an act to establish the Scarborough and Markham Plank-road Company, which was authorized to further improve the road surface to macadamized or planked construction between Kingston Road in Scarborough and Markham Village in the north, and further north and then east to Stouffville along the Markham-Stouffville township line, a line then formed between today's Stouffville Road and Main Street Stouffville. The company was allowed to erect gates and charge tolls to pay for the work. On March24, 1937, the gravel road between Beaverton and Port Bolster, known as the Port Bolster Road, was assumed by the Department of Highways; it was paved in 1947. On February 10, 1954, the highway designation was extended south to the future site of Highway 401 in Scarborough — though not all the way to the then-Highway 2 (Kingston Road) — where a cloverleaf interchange was constructed in anticipation of it developing into a freeway around the eastern side of Lake Simcoe; Highway 404 was constructed for this purpose, but along or parallel to Woodbine Avenue instead. In 1962, the highway was extended to Highway 46 at Bolsover via a concurrency with Highway 12 north from Beaverton. This routing would last until November 4, 1966, when the Beaverton Bypass opened, routing Highway 12 to the east. A new road was opened connecting Highway 48 south of Port Bolster with the bypass on the same day, and both Highway 12 and Highway 48 were rerouted. Portions of the former route of Highway 48 and Highway 12 were renumbered as Highway 48B. However, the segment between Port Bolster and what is now Brock Sideline 17 was decommissioned entirely. The original route of Highway 48, prior to 1954, is now part of Durham Regional Road 23. The portion of Highway48 within Scarborough, between Highway401 and Steeles Avenue, was transferred to Metropolitan Toronto on September 28, 1963. On June 28, 1967, the routing of Highway 46 was shifted in the vicinity of Balsam Lake on to a new inland bypass; the old route became known as West Bay Drive. On 1975, Highway 46 was truncated at