Sedgemoor is a local government district of Somerset in England. A low lying area of land close to sea level between the Quantock and Mendip hills, historically largely marsh (or moor) and contains the bulk of the area also known as the Somerset Levels, including the World's oldest known engineered roadway, the Sweet Track. The district was formed on April 1, 1974, under the Local Government Act 1972, by a merger of the municipal borough of Bridgwater, the Burnham-on-Sea urban district, Bridgwater Rural District and part of Axbridge Rural District.