A four-year legal spat over the Hoover Dam bypass project’s collapsed cableways has ended in a private settlement stemming from an April 20 arbitration ruling. A joint venture of Obayashi Corp., San Francisco, with PSM Construction USA Inc., Brisbane, Calif., will reimburse American Bridge Co., Coraopolis, Pa., an undisclosed amount for a cableway system that broke in 2006, causing a two-year delay.
In 2005, the joint venture signed a two-year, $105,000-a-month lease with American Bridge Co. to use two pairs of refurbished, 330-ft-tall lattice-framed towers with 2,500 ft of 3-in-dia. cableway strung between them. The so-called high lines function like a clothesline: About 890 ft above the Colorado River and a quarter-mile from the Hoover Dam, the cable was stretched across Black Canyon and would have enabled 104 precast bridge segments to be slid into place.