History of King's Highway 12B (Orillia):
This Business Route was created in 1959, when a new Highway 12 Bypass was built around Orillia. The old alignment through downtown (via Coldwater Road,
Front Street, and Atherley Road) became Highway 12B. In 1960, the highway was rerouted along West Street, instead of Front Street and Atherley Road. The
route at that time was 4.2 km long. The highway remained as a signed Business Route until 1982, when it was changed to an unposted 7000-series route number
(Highway 7184). Four other Highway 12B Business Routes have existed over the years in Port McNicoll, Coldwater, Gamebridge and Victoria Harbour.
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