Ontario Highway 15B (Carleton Place) History - The King's Highways of Ontario

The Carleton Place Highway 15B Business Route was created shortly after the Carleton Place Bypass was opened to traffic in December 1959. Part of the old alignment of Highway 15 through Downtown Carleton Place via Franktown Road, Moore Street and Bridge Street was renumbered as Highway 15B in June 1960. The remainder of Highway 15B followed the former route of Highway 110 via Bridge Street and Townline Road. The north-south section of Highway 15B through Carleton Place followed a concurrent route alongside Highway 29. In 1961, Highway 15 was rerouted between Smiths Falls and Carleton Place. The old route of Highway 15 between Perth and Carleton Place was renumbered as Highway 7. As a result of this new Highway 7 designation, Highway 15B was renumbered as Highway 7B. A different, unrelated Highway 15B existed in Seeleys Bay during the 1960s.