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 ...

Construction discovered a better way to handle concrete road barriers by utilizing ... workers and equipment in construction zones. A Federal Highway Administration (FHA) analysis of Bureau ...

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 ...