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 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.
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 1868 and subsequently replaced with other structures. In 2006, it was restored to limited service when a footbridge was built atop the surviving arch and abutments.
The Union Arch Bridge, also called the Cabin John Bridge, is a historic masonry structure in Cabin John, Maryland. It was designed as part of the Washington Aqueduct. The bridge construction began in 1857 and was completed in 1864. The roadway surface was added later. The bridge was designed by Alfred Landon Rives and built by the United States Army Corps of Engineers under the direction of Lieutenant Montgomery C. Meigs.
The Casselman Bridge is a historic transportation structure on the Casselman River, located immediately east of Grantsville in Garrett County, Maryland. The bridge was built in 1813-1814 as part of the National Road. Historic markers posted at each end read:
Erected 1813 by David Shriver Jr.,
Sup't of the "Cumberland Road". This 80 foot span
was the largest stone arch in America
at the time. It was continuously
used from 1813 to 1933.
The Fourpoints Bridge, near Emmitsburg, Maryland is a wrought iron bridge by the Wrought Iron Bridge Company of Canton, Ohio. The bridge crosses Toms Creek and is similar to the Poffenberger Road Bridge elsewhere in Frederick County. The 103-foot Pratt truss bridge remains in daily use.
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. 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 Waverly Street Bridge, also called the Westernport Bowstring Arch Truss Bridge, was a historic steel bowstring truss bridge at Westernport, Allegany County, Maryland, United States. It carried vehicular traffic on Waverly Street over George's Creek. The bridge had a span length of 108 feet (33 m). It was built in 1892, by the King Bridge Company of Cleveland, Ohio.
Hopewell is a set of historic homes and farm complexes located at Union Bridge, Carroll County, Maryland, United States. It consists of four related groupings of 19th century farm buildings. The Hopewell complex consists of two historic farms: Hopewell and the smaller F.R. Shriner Farm.
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 Crum Road Bridge is a historic bridge near Frederick, Frederick County, Maryland, United States. It spanned Israel Creek southeast of Walkersville. The bridge is an iron bowstring pony bridge that is 62 feet (19 m) in length and 15.8 feet (4.8 m) in width. The Crum Road Bridge was built on or about 1875, and was probably constructed by the King Iron Bridge Company of Cleveland, Ohio.
The Jericho Covered Bridge is a Burr arch through truss wooden covered bridge near Jerusalem, Harford County and Kingsville, Baltimore County, in Maryland, United States and near historic Jerusalem Mill Village. The bridge was constructed in 1865 across the Little Gunpowder Falls. This bridge is 88 feet (27 m) long and 14.7 feet (4.5 m) wide and is open to traffic.
The Gilpin's Falls Covered Bridge is a Burr arch through truss wooden covered bridge in Bay View, Cecil County, Maryland, United States, close to the town of North East. The bridge was constructed by local Cecil County bridgewright Joseph George Johnson in the autumn and winter of 1860-61 across North East Creek. The bridge was erected adjacent to and upstream of Samuel Gilpin's mills and dam and crosses the millpond formed by it. This bridge has a span of 100 feet (30 m) and a total length of 119 feet (36 m) with its shelter panel overhangs, is 13.5 feet (4.1 m) wide, and is closed to all vehicular traffic.
The Baltimore & Ohio Railroad Bridge, Antietam Creek was a timber trestle bridge near Keedysville, Washington County, Maryland, United States. It carried the Washington County branch of the Baltimore and Ohio Railroad, later part of CSX Transportation, over the ravine formed by the Antietam Creek northwest of Keedysville. The wooden bridge, constructed about 1867, was approximately 400 feet (120 m) in length and was supported by a series of timber bents resting on concrete sills. CSX abandoned the railroad line in the late 1970s or 1980s.
Wilson's Bridge is a bridge near Hagerstown, Washington County, Maryland, United States. It originally carried the Hagerstown and Conococheague Turnpike, the National Road, across Conococheague Creek 7 miles (11 km) west of Hagerstown. The five-arched structure, the longest of the county's stone bridges, is 210 feet (64 m) in length and is constructed of coursed local limestone. The bridge was erected in 1819 by Silas Harry, who had built similar bridges in Pennsylvania. The bridge was closed in June 1972 when it was damaged by floods which occurred during Tropical Storm Agnes.
The Saugatuck River Bridge is a bridge in Connecticut carrying Route 136 over the Saugatuck River in Westport. The bridge, built in 1884, is the oldest surviving movable bridge in Connecticut and is listed on the National Register of Historic Places. The total length of the bridge is 87.5 metres (287 ft) with a deck width of 6.1 metres (20 ft) and a minimum vertical clearance of 2.1 metres (6.9 ft) above the river. The bridge carries an average of about 16,000 vehicles per day. In 2007, the bridge was named the William F. Cribari Memorial Bridge.
The Upper Paris Bridge is a 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.
Nokesville Truss Bridge is a historic Pratt truss bridge carrying Virginia State Route 646 across the Norfolk Southern Railway near Nokesville, Prince William County, Virginia. It was built in 1882 by the Keystone Bridge Company. The single-span bridge measures 73 feet 11.5 inches (22.543 m) long, and is constructed of wrought iron.
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 Morley Bridge, also known as the Romley Bridge, located near Romlee in Chaffee County, Colorado, is a wrought-iron pin-connected Pratt truss bridge that was built in 1881. It was listed on the National Register of Historic Places in 2003.
