The Kansas City Bridge Company was a bridge building company that built many bridges throughout the Midwest United States in the early 1900s. The company was founded in 1893 and ceased business around 1960.
The King Iron Bridge & Manufacturing Company was a late-19th-century bridge building company located in Cleveland, Ohio. It was founded by Zenas King (1818–1892) in 1858 and subsequently managed by his sons, James A. King and Harry W. King and then his grandson, Norman C. King, until the mid-1920s. Many of the bridges built by the company were used during America's expansion west in the late 19th century and early 20th century, and some of these bridges are still standing today.
The Western Bridge and Construction Company, located in Omaha, Nebraska, was one of the foremost bridge engineering and manufacturing companies in the Midwestern United States. Several of their bridges are now listed on the National Register of Historic Places. Their headquarters were located in the Bee Building in Downtown Omaha.
The Keystone Bridge Company, founded in 1865 by Andrew Carnegie, was an American bridge building company. It was one of the 28 companies absorbed into the American Bridge Company in 1900. The company advertised its services for building steel, wrought iron, wooden railway and road bridges. It held a patent for wrought iron bridges and also supplied wrought iron columns for buildings. Thomas Carnegie worked for Keystone Bridge as treasurer for roughly 20 years, from the founding of the company until his death in 1886.
The Berlin Iron Bridge Company was a Berlin, Connecticut company that built iron bridges and buildings that were supported by iron. It is credited as the architect of numerous bridges and buildings now listed on the U.S. National Register of Historic Places. It eventually became part of the American Bridge Company.
Canton Bridge Company was a firm that was later incorporated into the American Bridge Company. The firm was established in Canton, Ohio in 1892 and became one of the nation's biggest bridge-builders during the early 20th century. It designed and/or built many bridges that later became listed on the U.S. National Register of Historic Places (NRHP).
The Massillon Bridge Company, most commonly abbreviated Massillon Bridge Co., was located in Massillon, Ohio and founded by Joseph Davenport in 1869. The company became incorporated in 1887 and remained in operation through the early 1900s. Steel truss bridges built by the Massillon Bridge Co. can be found throughout the midwest.
Quinlan's Covered Bridge, also called the Lower Covered Bridge, and Sherman Covered Bridge is a wooden covered bridge that crosses Lewis Creek in Charlotte, Vermont on Monkton Road. It was listed on the National Register of Historic Places in 1974. It is one of nine 19th-century Burr arch covered bridges in the state.
The Missouri Valley Bridge & Iron Co., also known as Missouri Valley Bridge Company, was a engineering, construction, and steel fabrication firm that operated through the late nineteenth and most of the twentieth centuries. It was based in Leavenworth, Kansas, with a WWII facility in Evansville, Indiana.
The Midland Bridge Company is a firm based in Kansas City, Missouri, United States, that has built numerous bridges. Several of its works are listed on the U.S. National Register of Historic Places (NRHP).
Standard Bridge Company was an American bridge company that was "one of the most important bridge building firms in Nebraska history."
George Herndon Pegram (1855–1937), most commonly known as George H. Pegram, was an engineer who patented the Pegram truss.
The Harshman Covered Bridge near Fairhaven, Ohio, was built in 1894 by Everett S. Sherman. It was listed on the National Register of Historic Places in 1976. It was documented by the Historic American Engineering Record (HAER) in 2003.
The Chambers Road Covered Bridge near Olive Green, Ohio was built in 1874 by Everett S. Sherman. It was listed on the National Register of Historic Places in 1974. It is an extremely rare surviving example of a Childs Truss bridge.
The Warnke Covered Bridge, also known as Warnke Bridge, is a historic covered bridge crossing Swamp Creek in Harrison Township, Preble County, Ohio, northeast of Lewisburg. Built from 1895 to 1896 by Everett S. Sherman, it has a span of 51 feet. It was listed on the National Register of Historic Places in 1976.
The Champion Bridge Company, formerly known as Champion Iron Bridge and Manufacturing Company, is a steel fabrication business based in Wilmington, Ohio, in the United States. It has been in business since the 1870s, and several of its works are listed on the National Register of Historic Places.
The Green River Covered Bridge is a covered bridge in western Guilford, Vermont. Built in the 1870s by Marcus Worden, it is a Town lattice truss bridge, carrying Green River Road over the eponymous river in a small rural village of the same name. It was listed on the National Register of Historic Places in 1973.
The Thetford Center Covered Bridge is a historic covered bridge, carrying Tucker Hill Road across the Ompompanoosuc River in Thetford, Vermont. It is the state's only known example of the Haupt patent truss system. It was listed on the National Register of Historic Places in 1974.
The historic bridges at the Lancaster campus of Ohio University were moved to the campus and sit about 100 yards (91 m) apart. The bridges were built in 1881 and 1884–85 very close to each other, both crossing Poplar Creek, and while the first-built is a wood-and-steel covered bridge and the second-built is all-steel, they are similar in design. Original and current locations of both bridges may be seen in OpenStreetMap linked at right.
The Salt Creek Covered Bridge, near Norwich in Perry Township, Muskingum County, Ohio, was built in 1876. It was listed on the National Register of Historic Places in 1974.
