Road surface layers of smaller stones, until the road surface was composed of small stones compacted into a hard, durable surface. "Road metal" later became the name of stone chippings mixed with tar to form the road surfacing material tarmac. A road of such material is called a "metalled road" in Britain, a "paved road" in Canada and the US, or a "sealed road" in parts of Canada, Australia and New Zealand. A granular surface can be used with a traffic volume where the annual average daily traffic is 1,200 vehicles per day or less. There is some structural strength if the
Fuller Covered Bridge Fuller Covered Bridge The Fuller Covered Bridge, also known as the Blackfalls Covered Bridge is a wooden covered bridge that crosses Black Falls Brook in Montgomery, Vermont on Fuller Bridge Road. It was listed on the National Register of Historic Places in 1974. The bridge is one of a concentrated regional collection built by brothers Sheldon & Savannah Jewett. The Fuller Covered Bridge is located on the north side of Montgomery village, on Fuller Bridge Road (a continuation of South Richford Road), just north of its junction with Black Falls Road. The bridge is a single-span Town lattice truss, long