The Hartland Covered Bridge in Hartland, New Brunswick, is the world's longest covered bridge, at 1,282 feet (391 m) long. It crosses the Saint John River from Hartland to Somerville, New Brunswick, Canada. The framework consists of seven small Howe Truss bridges joined together on six piers.
The bridge is situated in Southeastern Canada, in the western part of New Brunswick, between the municipality of Hartland to the east and the local service district of Somerville, in Carleton County, New Brunswick.
Oriented west-southwest to east-northeast, it is used by a small route connecting New Brunswick routes 103 and 105 that crosses the Saint John River just south of the island of Middle Becaguimec.
The Hartland Bridge has only one lane and only permits passage to vehicles having a mass lower than 10 tonnes and a height lower than 4.20 metres (13.8 ft).
According to en.wikipedia