The Pat Tillman Memorial Bridge
In 2010, construction crews completed a colossal project – a four-lane highway bridge spanning nearly 2,000 feet across the Colorado River at the Hoover Dam that is supported by an arch that comes directly out of the cliff face below it. It was not an easy task as the crews worked for five years and were required to build the bridge section by section from either side of the canyon, finally converging in the middle.
In order to support the arch sections as they were built, large steel suspension cables, anchored directly into the bedrock, were employed. The contractor worked directly with Thern to obtain power winches to aid in adjusting and positioning the cables as work progressed. During cable stay placement, the winches were required to counteract forces in excess of 16,000 pounds. Good thing, then, that each winch carried a rating of 25,000 pound load capacity. They were up to the task and the Pat Tillman Memorial Bridge was completed without issue with a little help from Thern.