CONSTRUCTION-MP 601.66--Joel's Southern Pacific in the Cascades

Construction

MP 601.66

At Milepost 601.66, a through plate girder span was constructed over what is now Highway 58.

This bridge is located 800' railroad east of the dam axis, and was built on a slide area. Heavy "H" beam steel columns were driven into the ground for stability, and to provide an anchor for the wingwalls and abutments to attach to.

Here is a view of the finished abutments and wingwalls. In the right of the photo, a conveyor belt can be seen coming off the hillside and crossing to the left. This conveyor system transported the fill material from the hills above the bridge down to the dam site.

Assembling the girder sections.

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