Sunday, February 04, 2007

Bridges Crossing the Truckee River

From: "Larry Hersh"

The original five bridges spanning the Truckee River, of the CPRR, were of wooden construction. The first, third, fourth and fifth crossings, were of what I call a Burr Arch type construction. These bridges were later covered to protect against dry rot. Now, for an interesting part of this discussion. The Second Crossing of the Truckee River bridge appears to be that of a Howe Truss type, with a pier in the middle between both trusses. Was it too, later covered as the other four bridges? By the way, today one can still see the original "angular slopes" of the bridge abutments toward the top, (Fourth and Fifth) which supported the Burr Arches. I have not explored the First and Third crossings as of yet, to hopefully find the same type of abutment design, unless they have been covered over with concrete, such as the western abutment of the Fifth Crossing. When the weather warms up, I hope to photograph these locations post same.

Also, if anyone has the resources, please scan with very high resolution, Hart #308. It appears to me that, along the grade to the right of the depot, showing the track on the fill material of the 5th Crossing (the bridge has not been build as of yet, it is not visible in this photo), if one looks carefully, locate the box car and then the water tank cars, etc. along the grade. Now look at the very far end of the consist, and it appears to me that a locomotive headed in a westbound direction may be on the "temporary bridge" trackage just below to the north of the crossing approach. Gamma correction may be needed to lighten up the photo. Or perhaps, the locomotive is stopped at the end of the fill material to the bridge.

—Larry Hersh