History of King's Highway 120 (#2):
The King's Highway 120 designation was assigned temporarily to a bypassed section of freeway near Barrie which connected Highway 400 to Highway 11 at Crown Hill. The
route number was apparently assigned in the early 1960s, after the new Highway 400 Extension opened to traffic between Barrie and Coldwater on December 23, 1959. The
completion of the Highway 400 Extension to Coldwater left a short 1.1 km section of Old Highway 400 approaching Crown Hill without a route number. According to
several Department of Highways of Ontario (DHO) records from the 1960s including the 1963 Mileage Tables, this route was temporarily known as Highway 120. However,
based on historical photographs, the Highway 120 designation was never posted along the highway, nor was the route ever marked as such on the Official Road Maps. The
last DHO document which references Highway 120 was an inventory log dated 1965, after which the route simply appears as "Old Highway 400". In more recent years, the
highway has generally been listed in MTO documents as Highway 400A. Out on the highway, the route is signed as Highway 11 northbound and Highway 400 southbound.
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