**The bridge was designed by a chap named "Outram" therefore it was an "Otram Bridge" but Prestoners bastardised this and it became "Owd Tram"**

**The "tram" in Outram was a complete coincidence (or nominative determinism?), being derived from a word meaning a beam and in use long before the Outrams were around.**

Something similar happened in New York City. There's a bridge from Staten Island to New Jersey that people call The Outerbridge. Makes sense, since, of all the bridges into New York City, this one is the farthest out. But in fact its official name is The Outerbridge Crossing, and it's named after Eugenius Harvey Outerbridge. You could look it up!