- "Blondin Bridge is falling down!"
- ―A workman, Blue Mountain Mystery
Blondin Bridge is a bridge above the Blue Mountain Quarry that collapsed whilst Rheneas was travelling over it. Paxton had to be repaired as a result of bricks landing on and damaging him. It was repaired by the end of Blue Mountain Mystery.
- Blondin Bridge received its name due to the fact that it spans over an aerial ropeway system which carries slabs of slate, known as a "blondin," which was in turn named after the French tightrope walker, Charles Blondin.
- Blondin Bridge is a pun on the nursery rhyme, "London Bridge is Falling Down."