Back to Page 39: Zone 9: Shasta Valley
In order to achieve a short bridge length over Shasta River, Southern Pacific has opted for a curve radius, that causes a speed restriction to 52 mph at least. In direct contact to a bridge with direct fixation of the track, it might not be possible to use high superelevation and high unbalanced superelevation, forcing an even lower limit.
© Robert Morris Photography, used with permission. For railroad photography in the Dunsmuir region, this site offers a huge selection. The photo above can be viewed here in its original context.