These include the Hwy 37 between Kitimat and Terrace, Hwy 16 between Prince Rupert and Terrace (also a rail route), and Hwy 37A between Stewart and Meziadin Junction.
The mentioned highways comprise Hwy 37 running from Kitimat to Terrace, Hwy 16 linking Prince Rupert to Terrace (and also serving as a railway line), and Hwy 37A connecting Stewart to Meziadin Junction.