This crumby old bridge has a special place in my heart being that it's my hometown
Main St. Bridge - Welland, Ontario -built 1930
It crosses the old Welland Canal (now recreational waterway since the bypass was built in the early 1970's). For 4 decades this lift bridge was the lifeline connecting the West(generally newer/more prosperous) and East (generally older/less prosperous) sides of town with most of the downtown being located on the East side.
anecdote: My mum was perpetually late for high school in the mornings because she lived on the East side and Welland High was on the West Side. I wish I could have used the boat traffic excuse!
Welland Canal Bridge 13