Everything old is new again Keith Regan learns from two senior bridge engineers how the California Department of Transportation is eager to work with contractors to bring new and little-used techniques into the mix to help address environmental and other constraints. The stretch of State Route 1 that runs between the Northern California communities of Pacifica and Montara about 20 miles south of San Francisco is one of the most breathtaking parts of the famous Pacific Coast Highway, which has been memorialized in song, photographs and films.