One that really used to irk me years ago (haven't heard it so much lately) is the mispronunciation of the City of "New Westminster"- "Westminister" just drove me crazy.
How about the Patella bridge? Spelled Patullo.
When I first moved to the mainland I was so confused by this. I thought maybe there were 2 bridges.
I find it annoying when streets have numerical AND word names...Like Scott Rd/ 120th street. Or roads that change names depending on what side of the intersection you're on. 104 Avenue and Tannery Rd. Some don't even bother with intersections when it comes to changing the road name...like South Fraser way/River Rd.