After contractual juggling and debates over the alleged dangers of steel rail ties, Austin’s Capital Metro opened its 32-mile MetroRail commuter line between the city of Leander, Texas, and Austin’s downtown Convention Center on March 22, a year later than originally planned. “The overall integration of the Centralized Traffic Control (CTC) system took longer to implement than anticipated,” Capital Metro spokesman Adam Shaivitz says. Last August, board-meeting minutes indicate, a system used for switching from freight to passenger rail had field-test problems. The opening comes more than five years after voters approved the “All Systems Go Plan” referendum. The agency
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.