The National Register of Historic Places in the United States is a register including buildings, sites, structures, districts, and objects. The Register automatically includes all National Historic Landmarks as well as all historic areas administered by the U.S. National Park Service. Since its introduction in 1966, more than 90,000 separate listings have been added to the register.
The Jones and Laughlin Steel Company began as the American Iron Company, founded in 1852 by Bernard Lauth and B. F. Jones, a few miles south of Pittsburgh along the Monongahela River. Lauth's interest was bought in 1854 by James H. Laughlin. The first firm to bear the name of Jones and Laughlin was organized in 1861 and headquartered at Third & Ross in downtown Pittsburgh. Katharine Hepburn's maternal uncle, Frank Garlinghouse, was a longtime engineer for J&L Steel.
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 Phoenix Iron Works, located in Phoenixville, Pennsylvania, was a manufacturer of iron and related products during the 19th century and early 20th century. Phoenix Iron Company was a major producer of cannons for the Union Army during the American Civil War. The company also produced the Phoenix column, an advance in construction material. Company facilities are a core component of the Phoenixville Historic District, a National Register of Historic Places site that was in 2006 recognized as a historic landmark by ASM International.
Dionicio Rodriguez (1891–1955) was a Mexican-born artist and architect whose work can be seen in Alabama, Arkansas, Illinois, Maryland, Michigan, New Mexico, Tennessee, and Texas, as well as Washington, D.C. and Mexico City.
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 Highway 78 Bridge at the Red River is an eight-span through truss bridge over the Red River between Oklahoma and Texas on Oklahoma State Highway 78/Texas State Highway 78. It was built as a federal relief project during the Great Depression as part of President Franklin Roosevelt's New Deal. Today the bridge and the area retain the look and feel of the time of its construction. As part of Highway 78 the bridge's average daily traffic was 1,700 cars per day.
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 Missouri Valley Bridge & Iron Co., also known as Missouri Valley Bridge Company, was a firm that built many bridges. It was based in Leavenworth, Kansas, with a WWII facility in Evansville, Indiana.
Fargo Bridge & Iron Co. was a bridge company based in North Dakota in the early part of the 20th century. It grew out of a partnership between Francis E. Dibley, who had previously been a representative of the Wisconsin Bridge and Iron Company, and W. H. Robinson, from Mayville. It was the state's dominant bridge-building company in its day, and its works include many bridges that are now listed on the U.S. National Register of Historic Places.
The Vincennes Bridge Company, based in Vincennes, Indiana, was a designer and builder of bridges that was "one of Indiana's 'most successful bridge-building firms'".
George Herndon Pegram, most commonly known as George H. Pegram, was an engineer who patented the Pegram truss.
Waddell & Harrington was an American engineering company that designed bridges from 1907 to 1915. It was formed in 1907 as a partnership of John Alexander Low Waddell (1854–1938) and John Lyle Harrington (1868–1942) and was based in Kansas City, Missouri, but had offices in Portland, Oregon, and Vancouver, British Columbia. The company designed more than 30 vertical-lift bridges for highways and railroads.
Robert and Company is an architectural engineering firm based in Atlanta, Georgia with multiple offices in the southern United States. It was founded in 1917. Its founder was L.W. "Chip" Robert, Jr..
Brown Bellows & Columbia was an American building contractor firm formed to build the huge U.S. Naval Air Base at Corpus Christi, Texas in 1940, as part of the U.S. buildup prior to its entering World War II. It was a consortium of three firms: Houston-based Brown & Root, Oakland, California-based Columbia Construction, and Houston-based Bellows.
The Illinois Steel Company was an American steel producer with five plants in Illinois and Wisconsin. Founded through a consolidation in 1889, Illinois Steel grew to become the largest steel producer in the United States. In 1898, several other steel and transportation companies were merged into it to form the Federal Steel Company, itself merged into U.S. Steel in 1901.
The Virginia Bridge & Iron Co., also known as Virginia Bridge Company, was a bridge company based in Roanoke, Virginia.
The Pittsburgh-Des Moines Steel Company, and often referred to as Pitt-Des Moines Steel or PDM was an American steel fabrication company. It operated from 1892 until approximately 2002 when its assets were sold to other companies, including Chicago Bridge & Iron Company. The company began as a builder of steel water tanks and bridges. It also later fabricated the "forked" columns for the World Trade Center in the 1960s, and was the steel fabricator and erector for the Gateway Arch in St. Louis. A number of its works are listed on the National Register of Historic Places.
Austin Bridge Company was a bridge company based in Dallas, Texas. It fabricated and built a number of bridges that are listed on the U.S. National Register of Historic Places.
Walter T. Vahlberg was an architect based in Oklahoma. Several of his works are listed on the National Register of Historic Places (NRHP).
