Traffic & Transportation Highway 17 Now Fully Open at Perch Bay By SaultOnline News Staff - April 22, 2014 @ 1:52 pm 0 FacebookTwitterWhatsAppLinkedinEmailPrint The Thessalon detachment of the O.P.P. are advising that Hwy. 17 at Big Perch Bay Road in the Bruce Mines area is fully open again. A culvert had began to collapse over the weekend.