The Allegheny Portage Railroad was the first railroad constructed through the Allegheny Mountains in central Pennsylvania. It operated from 1834 to 1854 as the first transportation infrastructure through the gaps of the Allegheny that connected the midwest to the eastern seaboard across the barrier range of the Allegheny Front. Approximately 36 miles (58 km) long overall, both ends connected to the Pennsylvania Canal, and the system was primarily used as a portage railway, hauling river boats and barges over the divide between the Ohio and the Susquehanna Rivers. Today, the remains of the railroad are preserved within the Allegheny Portage Railroad National Historic Site operated by the National Park Service.
The Monongahela Incline is a funicular located near the Smithfield Street Bridge in Pittsburgh, Pennsylvania. Designed and built by Prussian-born engineer John Endres in 1870, it is the oldest continuously operating funicular in the United States.
The Bollman Truss Railroad Bridge across the Little Patuxent River at Savage, Maryland, is one of the oldest standing iron railroad bridges in the United States and the sole surviving example of a revolutionary design in the history of American bridge engineering. The 160-foot (48.8 m) double-span was built in 1852 at an unknown location on the main line of the Baltimore and Ohio Railroad. It was moved 35 years later to its present location, where it replaced the very first Bollman bridge. Today, it carries the Savage Mill Trail.
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. Some claim it to be the world's oldest multiple arched stone railroad bridge. However, the Sankey Viaduct on the Liverpool and Manchester Railway was opened in 1830, and finally completed in 1833.
Tunkhannock Creek Viaduct is a concrete deck arch bridge on the Nicholson Cutoff rail segment of the Norfolk Southern Railway Sunbury Line that spans Tunkhannock Creek in Nicholson, Pennsylvania. Measuring 2,375 feet (724 m) long and towering 240 feet (73.15 m) when measured from the creek bed, it was the largest concrete structure in the world when completed in 1915 and still merited "the title of largest concrete bridge in America, if not the world" 50 years later.
The Parkersburg Bridge crosses the Ohio River between Parkersburg, West Virginia, and Belpre, Ohio. Designed by Jacob Linville, the bridge has 46 spans: 25 deck plate girder, 14 deck truss, 6 through truss, and 1 through plate girder. 50,000 cubic yards (38,000 m3) of stone were used for the 53 piers. The bridge was constructed from May 1869 to January 1871 by the Baltimore and Ohio Railroad. At the time of its completion, the bridge was reportedly the longest in the world at 7,140 feet (2,180 m).
The Stewartstown Railroad is a heritage railroad in Stewartstown, Pennsylvania. Chartered in 1884 by local interests in the Stewartstown area and opened in 1885, the Stewartstown Railroad survives today in very much original condition and retains its original corporate charter.
The Riverside Avenue Bridge is the only cast-iron bridge in Connecticut and one of a small number still in use in the United States. It carries Riverside Avenue over the New Haven Line railroad tracks in the Riverside section of Greenwich, Connecticut. The bridge was part of an earlier span built in 1871 over the Housatonic River by the New York and New Haven Railroad, and when that bridge was replaced, part of it was erected in Riverside in 1895. It was placed on the National Register of Historic Places in 1977.
The Kettle Falls Bridges is the collective name for a pair of steel cantilever bridges carrying State Route 20/U.S. Route 395 and the Kettle Falls International Railway across the Columbia River at Kettle Falls, Washington. The south bridge carries motor vehicle traffic while the similar northern span is used for rail.
The Reading-Halls Station Bridge is an historic, American, Howe pony truss railroad bridge that is located in Muncy Township, Lycoming County, Pennsylvania.
The Pennsylvania Railroad Old Bridge over Standing Stone Creek, also known as the Conrail Old Bridge over Standing Stone Creek, is an historic, American, multi-span, stone arch bridge that spans Standing Stone Creek and is located in Huntingdon, Huntingdon County, Pennsylvania.
Deer Creek Bridge, Railroad was a historic railroad bridge in Hopewell Township and Shrewsbury Township, York County, Pennsylvania. It was built about 1895, and measures 34-foot-6-inch-long (10.52 m) and 9-foot-wide (2.7 m) overall. The girder bridge was built by the Stewartstown Railroad. The bridge crosses Deer Creek.
Ridge Road Bridge, Stewartstown Railroad is a historic railroad bridge in Hopewell Township, York County, Pennsylvania. It was built sometime around 1895, and measures 72-foot-6-inch-long (22.10 m) and 10-foot-wide (3.0 m) overall. The girder bridge on stone abutments was built by the Stewartstown Railroad.
Stone Arch Road Bridge, Stewartstown Railroad is a historic railroad bridge in Shrewsbury Township, York County, Pennsylvania. It was built about 1895, and measures 27-foot-6-inch-long (8.38 m) overall. The girder bridge on stone abutments was built by the Stewartstown Railroad.
The Stewartstown Railroad Station is an historic, American railroad station that is located in Stewartstown, York County, Pennsylvania.
The EDZ Irigary Bridge is a historic Pennsylvania truss bridge in southeastern Johnson County, Wyoming. The bridge was built in 1913 at Sussex, Wyoming, and moved in 1963 to Irigary Road. The bridge was listed on the National Register of Historic Places in 1985 as part of a Multiple Property Submission devoted to historic bridges in Wyoming.
The East Shoreham Covered Railroad Bridge is a historic covered bridge spanning the Lemon Fair River near East Shoreham, Vermont. Built in 1897 by the Rutland Railroad Company, it is the state's only surviving example of a wooden Howe truss railroad bridge. It was listed on the National Register of Historic Places in 1974.
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 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.
