It would be an interesting question to sort out how much of the cost of the UP flyover is the low gradient and the support for up to 30tonne axle load trains, and how much is the seeming magic rail infrastructure cost multiplier that applies to rail work done in the US .


I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.