This is a list of the National Register of Historic Places listings in Linn County, Iowa.
The Burlington, Cedar Rapids and Northern Railway (BCR&N) was a railroad that operated in the United States from 1876 to 1903. It was formed to take over the operations of the bankrupt Burlington, Cedar Rapids and Minnesota Railway, which was, in turn, the result of merging several predecessor lines, the construction of which began in 1869. The corporate headquarters were in Cedar Rapids, Iowa, and it had operations in Iowa and in Minnesota. It was succeeded by the Chicago, Rock Island and Pacific Railway.
The Pine Mill Bridge is an historic structure located in Wildcat Den State Park in rural Muscatine County, Iowa, United States. It was built in 1878 near the Pine Creek Gristmill, the only place in Iowa where a mill and bridge combination remains in place. The bridge was listed on the National Register of Historic Places in 1998 as a part of the Highway Bridges of Iowa MPS.
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).
Big Creek Bridge 2 is located northeast of Madrid, Iowa, United States. It spans Big Creek for 53 feet (16 m). The Marsh arch bridge was designed by Des Moines engineer James B. Marsh in February 1917. The contract to build the structure was awarded in April of the same year to the N.E. Marsh & Son Construction Company of Des Moines for $3,170. It was completed later in 1917. The bridge was listed on the National Register of Historic Places in 1998.
The Ten Mile Creek Bridge was a historic structure located northwest of Decorah, Iowa, United States. It spanned Ten Mile Creek for 36 feet (11 m). The R.D. Wheaton Bridge Company of Chicago supplied several king post truss bridges to Winneshiek County in the mid-1890s, and this is probably one of them. There are no county records specific to this bridge. It was listed on the National Register of Historic Places in 1998 and it was delisted in 2017.
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 Hammond Bridge is a historic structure located west of Hamilton, Iowa, United States. It spans North Cedar Creek for 178 feet (54 m). Samuel B. Hammond, for whom the bridge is named, requested the Marion County Board of Supervisors in January 1894 to 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. He completed it later that year. The stream has been channelized so 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.
Monsrud Bridge is a historic structure originally located northwest of Waterville, Iowa, United States. It spanned Paint Creek for 43 feet (13 m). The King Iron Bridge Company of Cleveland fabricated and erected the Bowstring pony arch structure in 1887. It was listed on the National Register of Historic Places (NRHP) in 1998.
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.
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.
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 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.
The Chain Lakes Bridge is a historic structure located southeast of Palo, Iowa, United States. It carries a pedestrian trail for 370 feet (110 m) over the Cedar River. The Linn County Board of Supervisors began planning for this span in the early 1880s. They appropriated $20,000 for this two-span Pratt through truss The Wrought Iron Bridge Company of Canton, Ohio, which built bridges in the county since 1879, completed this structure in 1884. The bridge was listed on the National Register of Historic Places in 1998. While it was built to carry vehicular traffic, it is now in a nature preserve maintained by the Linn County Conservation Board.
The Herrold Bridge is a historic structure located near the unincorporated community of Herrold, Iowa, United States. It carried a gravel road for 156 feet (48 m) over Beaver Creek. Completed in 1921, this concrete cantilevered deck girder bridge replaced an earlier timber pile structure. It was designed by the Iowa State Highway Commission the previous year, and the Polk County Board of Supervisors awarded the construction contract to Ben Cole of Ames. The total cost of construction was $24,283.36. The bridge features three arched concrete deck girder spans that are cantilevered from concrete abutments and piers. It is considered one of the most technologically significant of Iowa's concrete girder bridges. The bridge was listed on the National Register of Historic Places in 1998. While it remains in place, the Herrold Bridge was replaced by a newer span slightly downstream.
Big Creek Bridge was a historic structure located northeast of Madrid, Iowa, United States. It spanned Big Creek for 43 feet (13 m). The Marsh arch bridge was designed by Des Moines engineer James B. Marsh. It was completed in 1916. The bridge was listed on the National Register of Historic Places in 1998. The historic span was replaced by a new bridge in 2004.
