Hey, not really pertaining to Smitty's question as it turns out, but since I have been studying the SVRy Maps, here is what I found after following the line from Baker to Prarrie: Max curvature found anywhere on the mainline appears to be 24 deg. There are 3 24 degree curves on the East side of Larch,2 around MP 32 and 1 around MP 34. On the West side of Larch there is 1 24 dgree curve not very far down the line from the wye. Other curves are generally 20 deg. or less with a lot of 16's. On the Prarrie City extension there are at least 16 24 deg curves!