Not necessarily, but whatever passenger service is operated, the tracks need to be brought back to a higher standard, and that includes bridges.
A different design of bridge decking and fastening the crossties and rail to the bridge. While it’s unlikely to be the case here, this is one reason why many recent rail bridges are being built with rock ballast on concrete instead of wood ties on steel girders.
The engineering design would consider what speed is desired, and choose the design accordingly.
No, I explained that was the case on light branch lines where trestles and bridges were especially flimsy. The Guelph Sub bridges have always handled longer heavyweight passenger trains behind heavy steam and diesel locomotives at moderate top speeds, ie 60-70 mph. I am sure that the design was sufficient for those to run safely. But if we are now wanting GO or VIa to run at 90-95 mph, or more…. that may exceed the as-built design capability of the bridges. Bringing them back up to as-built condition (they were not well maintained for the past 20 years) may not suffice.
- Paul