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 Calamus Creek Bridge near Maxwell, Iowa is a concrete Luten arch bridge constructed in 1905. It was built by N. M. Stark and Company for a cost of $900. It has a 25-foot (7.6 m) single span and a total length of 45 feet (14 m).
The Vine Street Bridge in West Union, Iowa brings South Vine St. over Otter Creek. It is a concrete Luten arch bridge built in 1910 by N.M. Stark & Co. It was listed on the National Register of Historic Places in 1998.
The Indian Creek Bridge is a wrought iron bridge, built about 1880 to the east of Cedar Rapids, Iowa. The bridge crosses the Indian Creek, a tributary of the Cedar River, in Linn County. It was designed and built by the Wrought Iron Bridge Company (WIBCO) of Canton, Ohio as an eight-panel pin-connected through truss in an unusual double-intersection Pratt design.
Mill Creek Bridge is a historic structure located in a rural area north of Clarence, Iowa, United States.The Cedar Bluff Bridge over the Cedar River was the first all-iron span built in Cedar County in 1877. Four more iron spans were built later that year, as were several others over the years before this bridge was completed in 1889. It is the only one of those bridges left, and one of the oldest pony truss bridges in the state of Iowa. Citizens in Dayton Township petitioned the Cedar County Board of Supervisors in June 1888 for the bridge over Mill Creek. The supervisors contracted with Ward and Keepers of Clinton, Iowa to design and build the bridge. The 58-foot (1,800 cm) span was built on concrete-filled iron cylinder piers, with timber stringer approach spans. Over the years sub-structural alterations have been made to the bridge. It has subsequently been abandoned and its deck is in a deteriorating condition. The bridge was listed on the National Register of Historic Places in 1998. It was relocated to Whitetails Saloon in 2020
County Line Bridge is a historic structure located in a rural area west of Columbus Junction, Iowa, United States. The Louisa County Board of Supervisors approved the petition of Thomas Anwyl in April 1893 to build a bridge over Long Creek on the Louisa-Washington county line. They awarded a $1,174 contract to the Gillette-Herzog Manufacturing Company of Minneapolis to build two bridges. The second span was the Gipple's Quarry Bridge over Buffington Creek in Elm Grove Township. The bridge span is supported by cast iron columns that were manufactured by the Cast Iron Pile and Bridge Company of Keosauqua, Iowa. The steel components were rolled by Carnegie for Gillette-Herzog in Pittsburgh. The pony truss bridge is typical of those built in the same era in Iowa, however, like Gipple's Quarry Bridge it has an unusual lower chord configuration with end panels that slope downward from the bearing shoes to the center panels. It has subsequently been abandoned. The bridge was listed on the National Register of Historic Places in 1998.
Hawkeye Creek Bridge is a historic structure located in a rural area northeast of Mediapolis, Iowa, United States. The Des Moines County Board of Supervisors contracted with Clinton Bridge and Iron Works on September 23, 1909, to design and build this bridge. It is an 80-foot (24 m) span that carries traffic of a gravel road over Hawkeye Creek. The structure is a single rigid-connected Pratt through truss that is supported by concrete abutments. It basically remains in an unaltered condition. The bridge was listed on the National Register of Historic Places in 1998.
The Boone River Bridge is a historic structure located north of Goldfield, Iowa, United States. It is a 6-panel, 128-foot (39 m) Warren Pony truss span over the Boone River. The construction began in 1910. The bridge was built in 1912 by the Iowa Bridge Company using steel fabricated at the Cambria steel mills in Johnstown, Pennsylvania. The Boone River Bridge is one of the few remaining multiple span pin-connected Pratt trusses in the state. It was listed on the National Register of Historic Places in 1998.
The Mill Creek Bridge is located north of Cherokee, Iowa, United States. It spans Mill Creek for 207 feet (63 m). On June 24, 1891, a disastrous flood along the Little Sioux River and its tributaries wiped out nearly every bridge in Cherokee County. The following month the county board of supervisors signed a contract with the George E. King Bridge Co. of Des Moines for 17,650 to replace the bridges. This Pratt truss bridge was fabricated by the King Bridge Company of Cleveland, Ohio. It and a similar span over Mill Creek near Larrabee are the only two that remain. This bridge was listed on the National Register of Historic Places in 1998. A modern concrete span, built just upstream in 2006, now carries the road. The old bridge is closed to vehicular traffic.
The Beaver Creek Bridge was a historic bridge located to the east of Perry, Iowa, United States. The 100-foot (30 m) span carried traffic on M Avenue over Beaver Creek. The Dallas County Board of Supervisors bought a rainbow arch bridge design from Des Moines engineer James B. Marsh. They contracted with his son Frank who owned F.E. Marsh & Co. of Jefferson, Iowa to build the bridge for $8,075. The bridge was listed on the National Register of Historic Places in 1998. It has subsequently been removed and replaced.
The Shellsburg Bridge is a historic structure located in Shellsburg, Iowa, United States. It spans Bear Creek for 64 feet (20 m). In April 1915 the Benton County Board of Supervisors contracted with Alfred Vinall to build the new bridge near Shellsburg's downtown area. He used a special design by the Iowa State Highway Commission (ISHC), and completed the project in late 1915 for $6,081.06. The ISHC designed plain bridges for its rural spans, but because this span is in town it features decorative elements: bichrome concrete detailing, molded concrete balustrades, and incised spandrel panels. The bridge was listed on the National Register of Historic Places in 1998.
The Hammond Bridge is a historic structure located west of Hamilton, Iowa, United States. It spans North Cedar Creek for 178 feet (54 m). In January 1894, Samuel B. Hammond, for whom the bridge is named, requested that the Marion County Board of Supervisors build a bridge near his property. In April of that year, they examined the site, and in June they contracted with S.F. Collins to build the Howe covered through truss bridge. He completed it later that year. The stream has been channelized so that the truss no longer spans the main water flow. In October 1977, a truck accident closed the bridge for two years, and it reopened in September 1979. The bridge was listed on the National Register of Historic Places in 1998. While it remains in place, a newer span was built to carry the vehicle traffic over the creek.
Otter Creek Bridge is a historic structure located northwest of Oelwein, Iowa, United States. It spans Otter Creek for 86 feet (26 m). In July 1917, the Fayette County Board of Supervisors choose this bridge design for a concrete through girder bridge from the Iowa State Highway Commission, and put the project out to bid. When no one bid on the job they decided to use day laborers to build the bridge. It was completed later in 1917 for $5,153.88. The bridge was listed on the National Register of Historic Places in 1998.
Stoe Creek Bridge was a historic structure located northwest of Oelwein, Iowa, United States. It spanned Stoe Creek for 38 feet (12 m). In June and July 1913, the Fayette County Board of Supervisors awarded contracts for several small bridges in the county. The Iowa State Highway Commission designed this single span bridge that was built by N.M. Stark and Company of Des Moines. It was completed in 1914 for $1,654. The bridge was listed on the National Register of Historic Places in 1998. It was replaced in 2007.
Lower Road Bridge is a historic structure located northwest of Anamosa, Iowa, United States. It spans Buffalo Creek for 160 feet (49 m). The King Iron Bridge and Manufacturing Co. of Cleveland erected a bowstring through arch truss and a shorter pony arch in 1878 for what was historically called Lower Road. The bridge's superstructure consists of a large stone masonry pier and abutments. It was listed on the National Register of Historic Places in 1998. The county abandoned the bridge and it is now privately owned.
The Dunkerton Bridge is a historic structure located in Dunkerton, Iowa, United States. The span carried a local street over Crane Creek for 212 feet (65 m). The three-span, filled spandrel arch bridge was built by the Marsh Engineering Company of Des Moines in 1909. It replaced an older span at a different location. The bridge served as the major entry point into the town from the north. This bridge was also replaced by a newer bridge to the east, and this span now carries pedestrian traffic between Charma Park and Marble Street into downtown Dunkerton. It was listed on the National Register of Historic Places in 1998.
The State Street Bridge is a historic structure located in Mason City, Iowa, United States. The span carries East State Street over Willow Creek for 62 feet (19 m). In the mid- to late-19th century, State Street was the only road into town from the east. There was a bridge at this crossing from at least 1875, but it is unknown what kind of bridges or how many served the crossing. This bridge was completed in 1903 and features a barrel arch with filled spandrels. Although the original guardrails have been replaced, it is the oldest roadway arch bridge in Cerro Gordo County. It was listed on the National Register of Historic Places in 1998.
The Dunleith and Dubuque Bridge, also known as the White Water Creek Bridge and the Bergfeld Recreation Area Bridge, is a historic structure located in Dubuque, Iowa, United States. This span was part of a seven-span approach to one of the first bridges constructed over the Mississippi River. It was part of a railroad bridge that connected Dubuque with Dunleith, Illinois, now known as East Dubuque. The bridge was fabricated by the Keystone Bridge Company of Pittsburgh, Pennsylvania. Andrew Carnegie himself traveled to Dubuque to advocate for his company to build the bridge. The bridge was erected by Reynolds, Saulpaugh and Company of Rock Island, Illinois. The approach, of which this iron truss was a part, was completed in 1872. It was used by the Illinois Central and other railroads.
East Indian Creek Bridge is a historic structure located southeast of Nevada, Iowa, United States. It spans East Indian Creek for 78 feet (24 m). N.M. Stark and Company of Des Moines started building bridges for Story County beginning in 1902, and then they held an exclusive contract until 1913 when the Iowa Legislature banned the practice. Stark constructed this concrete Luten arch structure in 1912 for $4,462 as part of a multi-bridge contract. This was the longest concrete arch built by Stark in Story County. It was listed on the National Register of Historic Places in 1998.
The Fish Creek Bridge is a historic structure that was originally located east of Salem, Iowa, United States. The span carried Hickory Road over Fish Creek for 50 feet (15 m). It is a small-scale, wrought-iron bridge that the Henry County Board of Supervisors bought from the George E. King Bridge Company of Des Moines in 1893 for $410.80. It was believed to have been fabricated by their parent company, King Iron Bridge Company of Cleveland, and assembled by local laborers. Its historical significance derived from its being an uncommon variant of the Pratt truss. It was listed on the National Register of Historic Places in 1998. Subsequently, the bridge has been replaced at its original location, and the historic structure was moved to Oakland Mills Park.
