The Bridgeport Bridge is a historic structure located near Denmark, Iowa, United States. This span was a replacement bridge for structure whose middle stone pier was deteriorating. The weaknesses in the old bridge were noted in 1887 and 1893. Both Des Moines and Lee counties financed the $5,110 construction of this bridge, which spans the Skunk River between the two counties. The 240-foot-long (73 m) Pennsylvania truss bridge was built in 1904 by the Clinton Bridge and Iron Works of Clinton, Iowa. It carried local traffic for nearly 90 years before it was closed. It has the distinction of being the longest pin-connected truss remaining in Iowa. The Bridgeport Bridge was listed on the National Register of Historic Places in 1998.
The Le Grand Bridge was a bridge north of Le Grand, Iowa, United States. It spanned the Iowa River for 242 feet (74 m), carrying traffic on a gravel road named Abbot Avenue. Since Abbott Avenue is the border between Marshall and Tama counties, the bridge is in two counties lengthwise. Many bridges span from one county to another, but few are lengthwise split. It necessitated a joint session of the two counties' Boards of Supervisors on June 29, 1896, to approve the project. The pinned Pratt through truss bridge was built in 1896 by the Marshalltown Bridge and Iron Works for $3,548. It was listed on the National Register of Historic Places in 1998. The bridge collapsed in the Iowa flood of 2008.
The First Avenue Bridge is a historic structure located in downtown Cedar Rapids, Iowa, United States. It carries U.S. Route 151 for 697 feet (212 m) over the Cedar River. The original six-span concrete arch structure was completed in 1920 for $420,000. It was designed by Marsh Engineering Company and built by Koss Construction Co., both of Des Moines. Consulting engineer Ned L. Ashton of Iowa City designed the 1960s remodel. He had all of the concrete work above the original arches torn out and the bridge rebuilt as an open-spandrel structure. The rebuild also included a wider deck to accommodate increased traffic and aluminum railings. While the bridge's original structural integrity has been compromised, this is the first notable concrete spandrel arch reconstruction in Iowa and possibly in the country. The bridge was listed on the National Register of Historic Places in 1998.
The Upper Paris Bridge is an historic structure located near the town of Coggon in rural Linn County, Iowa, United States. The pin-connected Whipple through truss bridge was built in 1879 as a wagon bridge. It was designed by the Wrought Iron Bridge Company of Canton, Ohio. The bridge was listed on the National Register of Historic Places in 1998 as a part of the Highway Bridges of Iowa MPS.
The Snider Bridge is located west of Corning, Iowa, United States. It spans Kemp Creek for 119 feet (36 m). In June 1885 the Adams County Board of Supervisors received 17 petitions for new bridges, including one from George Snider. The board decided to erect iron bridges for the longest two spans, including this one. They awarded a contract for both bridges to Reeve, Ward and Keepers of Clinton, Iowa for $1,451.00. This span was completed later in the year. The pinned Pratt pony truss continues to carry traffic on the gravel road over the creek. It was listed on the National Register of Historic Places in 1998.
The Chambers Ford Bridge is located southeast of Chelsea, Iowa, United States. It spans the Iowa River for 345 feet (105 m). The Tama County Board of Supervisors approved a petition to construct a bridge at Chambers Ford under the condition that the local residents to secure the right-of-way for the bridge, build the trestle work and all approaches to the bridge. The Clinton Bridge and Iron Works of Clinton, Iowa built a single-span, pin-connected Pratt truss in 1890. By the turn of the 20th century the north end of the timber trestle approach that the local citizens constructed deteriorated beyond repair. The county contracted with the George King Bridge Company of Des Moines for $3,987 to build a new Pratt through truss. It was listed on the National Register of Historic Places in 1998. The bridge has been closed since 2007
Bellefountain Bridge is located east of Tracy, Iowa, United States. It carried traffic of Ashland Avenue over the Des Moines River for 600 feet (180 m). In 1898 the Mahaska Board of Supervisors contracted with the Clinton Bridge Company of Clinton, Iowa to design and build a new bridge for $9,750. It replaced a ferry service that operated in the small town of Bellefountain. The Pratt through truss span was completed in 1898. Its deck has subsequently deteriorated and the bridge has been closed to traffic. The bridge was listed on the National Register of Historic Places in 1998.
The Okoboji Bridge is located southwest of Milford, Iowa, United States. The 83-foot (25 m) span carried traffic on 180th Avenue over a branch of the Little Sioux River. The Dickinson County Board of Supervisors hired a local contractor to build a bridge across the straits between East and West Okoboji Lakes in 1859. The wooden structures had to be rebuilt in 1874–1875. There was a desire for a drawbridge at this point to allow for steamboats to navigate between the lakes. Three different swing spans were built at this location in the 19th century. When the third span deteriorated the board of supervisors contracted with the Clinton Bridge and Iron Works of Clinton, Iowa to build a permanent span here in June 1909. The Pratt/Warren pony truss structure was completed later that year for $1,550. The bridge and the road were incorporated into the U.S. Highway System, and it was placed under the aegis of the Iowa State Highway Commission. In 1929 it was replaced with a fixed-span concrete girder structure. At that time the 1909 truss span was moved to Okoboji Township to span a branch of the Little Sioux River. It was listed on the National Register of Historic Places in 1998. The span has subsequently been abandoned.
The Morgan Bridge is a historic structure, originally located southeast of Old Peru, Iowa, United States. It spanned a branch of Clanton Creek for 60 feet (18 m). The wrought iron or steel Pratt pony truss was manufactured by the King Iron Bridge & Manufacturing Company of Cleveland. Benton Jones of Winterset, Iowa assembled it for $376.39. The approaches are timber stringer spans, and it is supported by timber pile bents. The bridge has not been operational for years. It was listed on the National Register of Historic Places in 1998. The span originally served a remote crossing, but has subsequently been relocated and is now owned by the Madison County Historical Society.
The Upper Iowa River Bridge, also known as the Hartley Bridge, is a historic structure located southeast of Dorchester, Iowa, United States. It spans the Upper Iowa River for 122 feet (37 m). Allamakee County built the first permanent bridge at this location around 1870. By the early 1910s it had deteriorated to the point of needing to be replaced, and it was removed in 1913. At the time this was on the main road between Dorchester and New Albin. Chambers and Dobson of New Hampton, Iowa was awarded the $2,585 to build the concrete superstructure. The Clinton Bridge and Iron Works of Clinton, Iowa fabricated and erected the Pratt truss structure for $3,490. It was completed in July 1914, and was one of the last bridges erected in the state before the Iowa State Highway Commission standardize bridge designs for through truss bridges. It was listed on the National Register of Historic Places in 1998.
The Elkader Keystone Bridge is a historic structure located in Elkader, Iowa, United States. The old iron truss bridge that crossed the Turkey River at this location was declared unsafe in 1888. The Clayton County Board of Supervisors decided to construct a bridge of native limestone as way of saving money and providing a reliable crossing. Engineer M. Tschirgi designed the structure and Dubuque stonemasons Byrne and Blade constructed the bridge. It was built at a cost of $16,282, and spans the river for 346 feet (105 m). This is one of the largest twin arched keystone bridges west of the Mississippi River. A sidewalk was added on the north side of the structure in 1924. The bridge was individually listed on the National Register of Historic Places in 1976.
The Garnavillo Township Bridge is a historic structure located west of Garnavillo, Iowa, United States. It spans an unnamed stream for 20 feet (6.1 m). Around the turn of the 20th-century Clayton County embarked on a project to replace its old bridges. On short crossing like this one they generally chose simple timber stringer structures. But for this one, and several others, they chose to take advantage of the large limestone deposits in the county. They contracted with stonemason A.C. Boyle of McGregor, Iowa to build this single deck arch bridge for $1,462.72. It replaced an old combination truss span. This bridge also been replaced, but it remains in place underneath the newer bridge. It was listed on the National Register of Historic Places in 1998.
The Eldorado Bridge is a historic structure located in Eldorado, Iowa, United States. It spans the Turkey River for 130 feet (40 m). The Fayette County Board of Supervisors contracted with J.G. Ratcliffe of Waukon, Iowa to design and build this Camelback through truss bridge. It features a single pin-connected span and stone abutments. It was complete in March 1899. The bridge was listed on the National Register of Historic Places in 1998.
Mill Race Bridge is a historic structure located northwest of Eldorado, Iowa, United States. It spans the Turkey River for 120 feet (37 m). Its name is derived from its location near a riverside mill. Horace E. Horton, a civil engineer from Minneapolis, had designed wagon bridges for Fayette County in the 1880s. When he joined the Chicago Bridge & Iron Company late in the decade, he took the county with him as a client. Chicago Bridge & Iron was responsible for providing the county's bridges in the 1890s. This bridge was completed about 1892, but its concrete abutments are not original. While it remains in place, but it has been replaced by a newer span. The Mill Race 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.
The Little Sioux River Bridge is a historic structure located northwest of Spencer, Iowa, United States. It spans the Little Sioux River for 180 feet (55 m). The bridge was originally located at Main Street, south of downtown Spencer over the same river. Two previous bridges had been located at the original location beginning in 1875, with a replacement in 1889. Clay County contracted with Clinton Bridge and Iron Works from Clinton, Iowa in 1900 to build this Pennsylvania through truss span. Completed the following year, it is the rare example of this type of bridge built in Iowa. A concrete arch span replaced this bridge in 1915, and it was moved to its current location the same year. The concrete abutments were built by Thor Construction Company from Cedar Falls, Iowa. The bridge was listed on the National Register of Historic Places in 1998.
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.
Moore's Ford Bridge was a historic structure located northeast of Monticello, Iowa, United States. It spanned White Water Creek for 100 feet (30 m). The Jones County Board of Supervisors received a petition for a bridge at this location in September 1877. While they agreed there was a need, they put off erecting a bridge here until other bridges in the county were completed at major crossings. They finally authorized this bridge in September 1883 and contracted with the Morse Bridge Company of Youngstown, Ohio to erect a single Pratt through truss span here. It was completed in June 1884 for $2,305. The bridge was listed on the National Register of Historic Places in 1998. It has subsequently been taken down.
Corbett's/Eby's Mill Bridge is a historic structure located northeast of Scotch Grove, Iowa, United States. It spans the Maquoketa River for 128 feet (39 m). James S. Applegate established a gristmill near this location in 1858. He was joined by John Corbett, who obtained ownership by 1868 and expanded the operation and added a sawmill. He petitioned the Jones County Board of Supervisors for an iron bridge at this location in 1870. They agreed to pay two-thirds of the construction costs with the final third paid for by local subscriptions. The contract to construct this bridge and a similar span in Monticello was made with Miller, Jamison & Company of Cleveland. Both are single span bowstring truss bridges that were completed in November 1871. This bridge has always been identified with the mill. Samuel Eby acquired it in 1875, and it remained in the family until 1913. The bridge was originally on a loop road that circled behind the mill pond. When County Road X73 was created in 1958 it bypassed the bridge to the south. The bridge has been under private ownership ever since. It was listed on the National Register of Historic Places in 1985.
The Winnebago River Bridge was a historic structure located north of Mason City, Iowa, United States. The span carried U.S. Route 65 over the Winnebago River for 122 feet (37 m). This is the second span at this location. The stone abutments from the previous bridge were utilized in this one. They were sheathed in concrete by the Concrete Engineering Company, and William Henkel of Mason City constructed the bridge. It is composed of three concrete spans with a 70 feet (21 m) center span cantilevered from shorter anchor spans. It was listed on the National Register of Historic Places in 1998. A second span has subsequently been built to the east in 1969.
