officedweller
Senior Member
- was elevating the Expo Line through Central Park a problem?
No, because it was a historical inter-urban railway RoW from New Westminster to Vancouver.
There may even have been old tracks in place when the Expo Line was built, as a railway overpass over Boundary Road was demolished about that time. It was called the Central Park Line. The Expo Line follows much of this route.
Here's a write-up:

The Central Park Line: the very first interurban in greater Vancouver - The Buzzer blog
Today, I’m pleased to present a brief look at the Central Park Line, one of the interurban lines that used […]
