In a board hearing on May 20, the California Transportation Commission approved a request from Caltrans and the San Francisco County Transportation Authority to use a public-private partnership on phase two of the Presidio Parkway project. Image: San Francisco County Transportation Authority Second phase of new Golden Gate Bridge approach would bypass public engineers’ union. The $1-billion project, which will demolish the current Doyle Drive southern approach to the Golden Gate Bridge and construct a six-lane replacement facility through the Presidio park, is currently in the first phase, which includes the first four contracts; contracts five through eight now would
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.