Guilford is an unincorporated community located in Howard County in the state of Maryland. The location is named after the Guilford Mill. Guilford is near Kings Contrivance, one of the nine "villages" of Columbia.
Savage is an unincorporated community and census-designated place located in Howard County, Maryland, United States, approximately 18 miles (29 km) south of Baltimore and 21 miles (34 km) north of Washington, D.C. It is situated close to the city of Laurel and to the planned community of Columbia. As of the 2010 census it had a population of 7,054. The former mill town is a registered historic place, and has many original buildings preserved within and around the Savage Mill Historic District.
The Bollman Truss Railroad Bridge at Savage, Maryland is the sole surviving example of a revolutionary design in the history of American bridge engineering. The 160-foot (48.8 m) double-span is a suspension truss bridge. The first Bollman bridge was installed on the site; however, the current bridge is not the original. The current bridge was built in 1852 and moved to the site thirty years later. It is one of the oldest standing iron railroad bridges in the United States. Currently, however, it is in use carrying the Savage Mill Trail across the Little Patuxent River.
The Carrollton Viaduct, located over the Gwynns Falls stream near Carroll Park in southwest Baltimore, Maryland, is the first stone masonry bridge for railroad use in the United States, built for the Baltimore and Ohio Railroad, founded 1827, and one of the world's oldest railroad bridges still in use for rail traffic. Construction began in 1828 and was completed in 1829. The bridge is named in honor of Charles Carroll of Carrollton (1737–1832), of Maryland, known for being the last surviving signer of the Declaration of Independence, the only Roman Catholic in the Second Continental Congress (1775–1781), and wealthiest man in the Thirteen Colonies of the time of the American Revolutionary War (1775–1783).
The Thomas Viaduct spans the Patapsco River and Patapsco Valley between Relay, Maryland and Elkridge, Maryland, USA. It was commissioned by the Baltimore and Ohio Railroad (B&O); built between July 4, 1833, and July 4, 1835; and named for Philip E. Thomas, the company's first president. It remains the world's oldest multiple arched stone railroad bridge.
The Patterson Viaduct was built by the Baltimore and Ohio Railroad (B&O) as part of its Old Main Line during May to December 1829. The viaduct spanned the Patapsco River at Ilchester, Maryland. It was heavily damaged by a flood in 1866 and subsequently replaced with other structures.
The Baltimore and Ohio Ellicott City Station Museum in Ellicott City, Maryland, is the oldest remaining passenger train station in the United States, and one of the oldest in the world. It was built in 1830 as the terminus of the Baltimore and Ohio Railroad line from Baltimore to the town then called Ellicott's Mills, and a facility to service steam locomotives at the end of the 13-mile (21 km) run. The station, a National Historic Landmark, is now used as a museum.
The B & O Railroad Potomac River Crossing is a 15-acre (6.1 ha) historic site where a set of railroad bridges, originally built by the Baltimore and Ohio Railroad, span the Potomac River between Sandy Hook, Maryland, and Harpers Ferry, West Virginia, in the United States. The site was added to the National Register of Historic Places on February 14, 1978 for its significance in commerce, engineering, industry, invention, and transportation.
The Savage Mill Historic District is a national historic district located at Savage, Howard County, Maryland. The district comprises the industrial complex of Savage Mill and the village of workers' housing to the north of the complex.
The Old Mill Road Bridge is a historic bridge near Rocky Ridge, Frederick County, Maryland, United States. The bridge spans Owens Creek southwest of Rocky Ridge on Old Mill Road. It is a Pratt half-hip through truss structure in a single span 69 feet (21 m) long and 16 feet (4.9 m). It was built in 1882 by the Pittsburgh Bridge Company, Pittsburgh, Pennsylvania.
The Sulphite Railroad Bridge, also known locally as the Upside-Down Covered Bridge is a historic railroad bridge in Franklin, New Hampshire. The bridge was built circa 1896-7 to carry the tracks of the Boston and Maine Railroad across the Winnipesaukee River between Franklin and Tilton. The bridge is believed to be the only surviving "upside down" covered railroad bridge in the United States, in which the rail bed is laid on top of the bridge roof, whose purpose is to shelter the trusses below. The bridge was listed on the National Register of Historic Places in 1975. The bridge, unused since 1973, is not in good condition, having been subjected to graffiti, vandalism, and arson, as well as the elements.
The Hillsborough Railroad Bridge was a historic covered railroad bridge spanning the Contoocook River in Hillsborough, New Hampshire. Built in 1903 by the Boston and Maine Railroad, it was destroyed by arson in 1985. The bridge was listed on the National Register of Historic Places in 1975. At the time of its nomination it was one of six covered railroad bridges in the state; it and at least one other were destroyed by the actions of arsonists.
The Pier Bridge is a historic covered bridge in Newport, New Hampshire. Originally built in 1907 to carry the Boston and Maine Railroad across the Sugar River, it now carries the multi-use Sugar River Trail, which was built on the abandoned right-of-way. It is one of a modest number of historic covered bridges in New Hampshire, and is named for the fact that it has a central pier. The bridge was listed on the National Register of Historic Places in 1975.
The Rice Farm Road Bridge is a historic bridge in Dummerston, Vermont. It is an iron Warren through truss, spanning the West River between Vermont Route 30 and Rice Farm Road. Built in 1892, it is one of the state's oldest surviving metal truss bridges. It was listed on the National Register of Historic Places in 1995.
The Gould's Mill Bridge is a historic Baltimore through truss bridge, carrying Paddock Street across the Black River in Springfield, Vermont. The bridge was built by the Boston Bridge Works Company in 1929 after major flooding in 1927, and is one of the state's few examples of a Baltimore truss. It was listed on the National Register of Historic Places in 2006.
The Swanton Covered Railroad Bridge was a covered bridge in Swanton, Vermont. Built in 1898, it carried the St. Johnsbury and Lamoille County Railroad across the Missisquoi River just west of Swanton village. It was destroyed by fire in 1987, and its site is now occupied by the former West Milton Bridge. The bridge was listed on the National Register of Historic Places in 1973, and has not been delisted despite its destruction.
The Railroad Street Bridge is a historic Pratt through truss bridge, carrying Railroad Street across the Lamoille River in Johnson, Vermont. It was built in 1928, after the state's devastating 1927 floods, and is one of its few surviving Pratt through truss bridges. It was listed on the National Register of Historic Places in 2007 as Bridge 6.
The Oakland Mills Bridge is a historic structure located in Oakland Mills Park southwest of Mount Pleasant, Iowa, United States. The span carried Hickory Road over the Skunk River for 358 feet (109 m). In July 1876 the Henry County Board of Supervisors decided to locate the bridge over the Skunk River at Oakland Mills. After engineers looked over the proposals, they choose the Missouri Valley Bridge and Iron Company of Leavenworth, Kansas to build the structure. The long-span combination Pratt truss through and pony truss was completed later the same year. The steel components where manufactured by the Phoenix Iron Company of Pennsylvania. It is one of the oldest Pratt through truss bridges in Iowa. Long closed to vehicular traffic, it was listed on the National Register of Historic Places in 1998.
The New Hampton Pony Pratt Truss Bridge is a historic pony Pratt truss bridge on Shoddy Mill Road in New Hampton of Lebanon Township, Hunterdon County, New Jersey. It crosses the Musconetcong River between Lebanon Township, Hunterdon County and Washington Township, Warren County. It was designed by Francis C. Lowthorp and built in 1868 by William Cowin of Lambertville, New Jersey. The bridge was added to the National Register of Historic Places on July 26, 1977 for its significance in engineering, industry and transportation. It is one of the few early examples of iron Pratt truss bridges remaining in the United States. It was later documented by the Historic American Engineering Record in 1991. It was added as a contributing property to the New Hampton Historic District on April 6, 1998.
The Booth-Kelly Railroad Bridge, more commonly known as Hayden Bridge, is a truss bridge located in Springfield, Oregon, spanning over the McKenzie River. The bridge initially served as a traditional railroad bridge, starting as part of the first transcontinental railroad in Utah, before being shipped to its current location to serve as part of the Marcola line, whose primary use was the distribution of lumber. It later closed down due to the closure of the area's lumbermills, until it was converted into a pedestrian bridge in 2019. It is one of the few remaining wrought-iron, Phoenixville bridges still standing, and the oldest intact bridge in the state of Oregon.
