In 1965, a portion of Route 57 was designated to bypass Hackettstown, running from its intersection with Route 24 to U.S. Route 46 east of Hackettstown; this was never built.
In 1953, Route 3 was moved to its current freeway alignment, replacing Route S3, and a portion of Route 20 was designated to run from current Route 3 north to Paterson Plank Road while Paterson Plank Road was removed from the state highway system.
By 1994, DE 15 was designated to follow a portion of US 301/DE 299 west of Middletown.
The portion of FM 1709 traveling from SH 114 westward to Gateway Drive will become one-way, and the eastbound portion of the highway will be designated to Gateway Drive.
In the summer of 1970, the section of highway between Lloydminster and Saskatoon was designated to be a portion of the Yellowhead Highway.
In 1971, Route 147 was designated to replace the portion of County Route 585 between U.S. Route 9 in Burleigh and the North Wildwood border.
The centre designated as Nkhota Kota and Domira Bay, on the map is fairly deep in comparison to the southern portion designated as the southwest and east arms.
By 1961, the portion designated as RM 2134 had been upgraded to a bituminous surface, made of asphalt and crushed rock.
This portion was designated a part of Highway 420 until 2000, when it was transferred to the City of Niagara Falls and the Regional Municipality of Niagara, although the Ministry of Transportation of Ontario (MTO) still assists with the maintenance of it under a Connecting Link agreement.
Department visitors can park for free in the designated portion (close to Fitzrandolph Road) of Lot 21 (here is a map of Lot 21).
