Concrete road barriers were first used in California ... so an alternate barrier was created. According to the Federal Highway Administration, the F-Shape barrier has the same 3-inch-high base ...

including reinforced segments with buried concrete barriers and rock-filled baskets to improve resilience against flooding. Recent FHWA roadwork across Death Valley National Park included ...

On or about the night of May 18, contractors will begin installing a concrete barrier along the left lanes of Interstate 81 ...