Quote:
Originally Posted by swimmer_spe
Iam trying to understand BC's highway numbering system.Why are there letters after some of them? Why are they not just a whole different number?
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In many cases the “A” route is a former alignment. Highway 5A was the original route of Highway 5, prior to the building of the Coquihalla Highway. Other examples of former alignments include 1A in the Lower Mainland and on Vancouver Island, 3A near Keremeos, 7A along Hastings Street and Barnet Highway, and 99A along King George Blvd in Surrey. A recently designated one is 17A at Ladner, which is one I’m surprised the province didn’t download when it was bypassed.
On the other hand, the former 17A on Vancouver Island was never part of Highway 17 to my knowledge. As I understand it, it was established at the same time 17 was built.
Highway 97 and its suffixed routes are a whole other situation, and I think it’s confusing for non-locals.
On another topic with BC highway numbering, I think it would be worthwhile to consider moving the Highway 1 designation to the Coquihalla. I understand why it wasn’t done back when it was opened, but it’s been toll free since 2008.