A covered bridge is a timber-truss bridge with a roof, decking, and siding, which in most covered bridges create an almost complete enclosure. The purpose of the covering is to protect the wooden structural members from the weather. Uncovered wooden bridges typically have a lifespan of only 20 years because of the effects of rain and sun, but a covered bridge could last over 100 years. In the United States, only about 1 in 10 survived the 20th century. The relatively small number of surviving bridges is due to deliberate replacement, neglect, and the high cost of restoration.
Daniel Craig McCallum was a Scottish-born American railroad engineer, general manager of the New York and Erie Railroad and Union Brevet Major General of the United States Military Railroads during the American Civil War, known as one of the early pioneers of management. He set down a group of general principles of management, and is credited for having developed the first modern organizational chart.
The Quebec Bridge is a road, rail, and pedestrian bridge across the lower Saint Lawrence River between Sainte-Foy and Lévis, in Quebec, Canada. The project failed twice during its construction, in 1907 and 1916, at the cost of 88 lives and additional people injured. It took more than 30 years to complete and eventually opened in 1919.
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units. The connected elements may be stressed from tension, compression, or sometimes both in response to dynamic loads. The basic types of truss bridges shown in this article have simple designs which could be easily analyzed by 19th and early 20th-century engineers. A truss bridge is economical to construct because it uses materials efficiently.
Hinchinbrooke is a rural community in southern Quebec, in the Châteauguay Valley, in the MRC de Le Haut-Saint-Laurent. The population as of the Canada 2011 Census was 2,242.
B & O Railroad Viaduct is a historic structure in Bellaire, Ohio, listed in the National Register of Historic Places on June 22, 1976.
Hyde Hall Bridge is a wooden covered bridge over Shadow Brook built in 1825, on then-private property of Hyde Hall, a country mansion. Both are now included in Glimmerglass State Park. With the possible exception of the Hassenplug Bridge in Pennsylvania, it is the oldest documented, existing covered bridge in the United States. The World Guide to Covered Bridges and its entries of both the National Register of Historic Places and the Historic American Engineering Record list it as being constructed in 1825. The Historic American Buildings Survey entry for it shows an 1830 erection date.
The Jackson Covered Bridge also known as the Rockport Covered Bridge is located in the 'forgotten town' of Rockport, northwest of Bloomingdale, Parke County, Indiana, USA.
The Leatherwood Station Covered Bridge is a single span double Burr Arch Truss covered bridge structure that was built by Joseph A. Britton & Son in 1899. Originally it had sandstone abutments but when it was moved to Billie Creek Village they were replaced with concrete abutments with sandstone showing.
The Bath Covered Bridge is a historic covered bridge over the Ammonoosuc River off US 302 and NH 10 in Bath, New Hampshire. Built in 1832, it is one of the state's oldest surviving covered bridges. It was listed on the National Register of Historic Places in 1976, and underwent a major rehabilitation in the 2010s.
The Denison Bridge is a heritage-listed footbridge over the Macquarie River in Bathurst, New South Wales, Australia. It is the fourth oldest metal truss bridge existing in Australia.
Pennsylvania Railroad, Connecting Railway Bridge is a stone arch bridge in Philadelphia, Pennsylvania, that carries Amtrak Northeast Corridor rail lines and SEPTA and NJT commuter rail lines over the Schuylkill River. It is located in Fairmount Park, just upstream from the Girard Avenue Bridge.
The Pulp Mill Covered Bridge, also called the Paper Mill Covered Bridge, is a wooden covered bridge that crosses Otter Creek between Middlebury and Weybridge, Vermont on Seymour Street. It was listed on the National Register of Historic Places in 1974.
The Great Eddy Covered Bridge, also called the Big Eddy Covered Bridge or Waitsfield Covered Bridge, is a wooden covered bridge that crosses the Mad River in Waitsfield, Vermont on Bridge Street. Built in 1833, it is one of Vermont's oldest covered bridges. It was listed on the National Register of Historic Places in 1974.
Bridge No. 4, near La Crosse, Wisconsin, United States, was built in 1902. It is a bowstring truss bridge built by the Clinton Bridge Company. It was listed on the National Register of Historic Places in 1980 and documented by the Historic American Engineering Record in 1987.
The Flint Covered Bridge is a historic covered bridge carrying Bicknell Hill Road over the First Branch White River in northern Tunbridge, Vermont. Built in 1845, it is the oldest of five 19th-century covered bridges in Tunbridge, representing one of the highest concentrations of covered bridges in the state. It was listed on the National Register of Historic Places on September 10, 1974.
Wright's Bridge is a historic covered bridge in Newport, New Hampshire. Originally built in 1906 to carry the Boston and Maine Railroad across the Sugar River, it now carries the multi-use Sugar River Trail. The bridge was listed on the National Register of Historic Places in 1975.
The Taftsville Covered Bridge is a timber-framed covered bridge which spans the Ottauquechee River in the Taftsville village of Woodstock, Vermont, in the United States. Built in 1836 and exhibiting no influence from patented bridge designs, it is among the oldest remaining covered bridges both in Vermont and the nation as a whole.
The Quechee Gorge Bridge is a historic bridge, carrying U.S. Route 4 (US 4) across Quechee Gorge, near the Quechee village of Hartford, Vermont. Built in 1911, it is Vermont's oldest surviving steel arch bridge. It was listed on the National Register of Historic Places in 1990.
The West Sixth Street Bridge is a historic stone arch bridge in downtown Austin, Texas. Built in 1887, the bridge is one of the state's oldest masonry arch bridges. It is located at the site of the first bridge in Austin, carrying Sixth Street across Shoal Creek to link the western and central parts of the old city. The bridge was added to the National Register of Historic Places in 2014.
