Champlain Valley southward into the Valley of Vermont. The Vermont Lowlands are primarily underlain by sedimentary rocks, especially limestone and shale, though metamorphic rocks such as marble and slate are also present. Lake Champlain is situated in the Champlain Valley between the Green Mountains of Vermont and the Adirondack Mountains of New York, drained northward by the Richelieu River into the St. Lawrence River at Sorel-Tracy, Quebec (northeast of Montreal). Major tributaries of Lake Champlain include Otter Creek and the Winooski, Missisquoi, and Lamoille rivers in Vermont, and the Ausable, Chazy, Boquet, and Saranac rivers in New York. Lake Champlain also receives
Lake Champlain Bridge (2011) Lake Champlain Bridge (2011) The Lake Champlain Bridge is a vehicular bridge traversing Lake Champlain between Crown Point, New York and Chimney Point, Vermont. It replaced the Champlain Bridge. The bridge was designed and constructed during an aggressive two-year schedule to minimize the social and economic impact of the original bridge's demolition. It is the only fixed-link crossing of Lake Champlain/Champlain canal between US 4 in Whitehall, to the south and US 2 at Rouses Point, to the north. The main arch span was prefabricated off-site in Port Henry, floated by barge to the already constructed approach spans, and then