The Allegheny Portage Railroad was the first railroad constructed through the Allegheny Mountains in central Pennsylvania, United States; 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, haulting river boats and barges over the divide between the Ohio and the Susquehanna Rivers.
The Smithfield Street Bridge is a lenticular truss bridge crossing the Monongahela River in Pittsburgh, Pennsylvania, USA.
The Delair Bridge is a railroad bridge with a vertical-lift section that crosses the Delaware River between Philadelphia, Pennsylvania, and Pennsauken Township, New Jersey, just south of the Betsy Ross Bridge. The two-track bridge is part of Conrail Shared Assets Operations and is jointly used by Norfolk Southern Railway and CSX Transportation freight trains, as well as by the New Jersey Transit Atlantic City Line service.
The Liberty Bridge, completed in 1928, connects downtown Pittsburgh, Pennsylvania, to the Liberty Tunnels and the South Hills neighborhoods beyond. It crosses the Monongahela River and intersects Interstate 579 at its northern terminus.
The Morrisville–Trenton Railroad Bridge is a rail bridge across the Delaware River between Morrisville, Pennsylvania and Trenton, Mercer County, New Jersey, United States.
The Hot Metal Bridge is a truss bridge in Pittsburgh, Pennsylvania, that crosses the Monongahela River. The bridge consists of two parallel spans on a single set of piers: the former Monongahela Connecting Railroad Bridge, built in 1887, on the upstream side and the former Hot Metal Bridge, built in 1900, on the downstream side. The Monongahela Connecting Railroad Bridge carried conventional railroad traffic, while the Hot Metal Bridge connected parts of the J&L Steel mill, carrying crucibles of molten iron from the blast furnaces in ladle transfer cars to the open hearth furnaces on the opposite bank to be converted to steel. During World War II 15% of America's steel making capacity crossed over the Hot Metal Bridge, up to 180 tons per hour. The upstream span was converted to road use after a $14.6 million restoration, and opened by Mayor Murphy with a ceremony honoring former steel workers on June 23, 2000. The bridge connects 2nd Avenue at the Pittsburgh Technology Center in South Oakland with Hot Metal Street in the South Side. The downstream span reopened for pedestrian and bicycle use in late 2007 after two years of work. The Great Allegheny Passage hiker/biker trail passes over this bridge as it approaches Pittsburgh's Golden Triangle area.
The West End Bridge is a steel bowstring arch bridge over the Ohio River in Pittsburgh, Pennsylvania, approximately one mile below the confluence of the Allegheny and Monongahela Rivers. The bridge was built from 1930 to 1932 primarily by the American Bridge Company (superstructure) and the Foundation Company (substructure) and was the world's first to use tied-arch technology on a large scale. It connects the West End to the Chateau neighborhood on the North Side of Pittsburgh. The bridge was placed on the National Register of Historic Places in 1979, and the List of Pittsburgh History and Landmarks Foundation Historic Landmarks in 2001. As of 2016, the bridge and its surrounding approaches are undergoing some major reconstruction.
The Ohio Connecting Railroad Bridge is a steel bridge which crosses the Ohio River at Brunot's Island at the west end of Pittsburgh, Pennsylvania, United States. It consists of two major through truss spans over the main and back channels of the river, of 508 feet (155 m) and 406 feet (124 m) respectively, with deck truss approaches.
The Port Perry Branch is a rail line owned and operated by the Norfolk Southern Railway in the U.S. state of Pennsylvania. The line runs from the Pittsburgh Line in North Versailles Township southwest through the Port Perry Tunnel and across the Monongahela River on the PRR Port Perry Bridge to the Mon Line in Duquesne along a former Pennsylvania Railroad line.
Dunlap's Creek Bridge was the first arch bridge in the United States built of cast iron. It was designed by Richard Delafield and built by the United States Army Corps of Engineers. Constructed from 1836 to 1839 on the National Road in Brownsville, Pennsylvania, it remains in use today. It is listed on the National Register of Historic Places and is a National Historic Civil Engineering Landmark (1978). It is located in the Brownsville Commercial Historic District and supports Market Street, the local main thoroughfare. Due to the steep sides of the Monongahela River valley, there is only room for two short streets parallel to the river's shore and graded mild enough to be comfortable to walk before the terrain rises too steeply for business traffic.
The Selinsgrove Bridge is a railroad bridge that carries Norfolk Southern lines across the Susquehanna River between Lower Augusta Township, Pennsylvania and Selinsgrove, Pennsylvania. The bridge once carried Pennsylvania Railroad and later Penn Central Railroad lines across the river. The bridge crosses over Cherry and Fishers Islands. Many of its wrought iron Pratt through truss spans date to 1888, with significant alterations in 1901, 1925 and 1930.
The Safe Harbor Trestle also known as the Safe Harbor Bridge, Port Road Bridge and the Enola Low Grade Line Steel Trestle is a steel deck truss trestle that spans the Conestoga River at Safe Harbor, Pennsylvania near the Susquehanna River for the Port Road Branch and the former Columbia and Port Deposit Railroad along the Susquehanna River. It was built in 1905 for the Atglen and Susquehanna Branch (A&S), also known as the "Low Grade Branch", of the Pennsylvania Railroad (PRR).
The PPR Port Perry Bridge is a truss bridge that carries the Norfolk Southern Railway across the Monongahela River between the Pennsylvania towns of North Versailles Township, and Duquesne. The bridge was built to serve the Pennsylvania Railroad, to provide better access to industrial sites, and to help through trains bypass downtown Pittsburgh. Today, the bridge and corresponding route serve a similar purpose and are used to allow high-level loads, especially double-stacked container cars, to avoid the narrower routes through Pittsburgh.
The Bessemer & Lake Erie Railroad Bridge it is a truss bridge that carries the Canadian National Railway's Bessemer and Lake Erie Railroad division across the Allegheny River between the Pittsburgh suburbs of Plum and Harmar Township, Pennsylvania. In 1897, a single-track trestle and viaduct was built on this site; in 1918, the original piers were doubled in width, the current double-tracked structure built alongside, and then slid into place. The original north trestle approach was buried in slag dumped from an adjacent temporary filling trestle.
The West Brownsville Junction Bridge carries the Norfolk Southern Railway across the Monongahela River from Brownsville Township to West Brownsville in the state of Pennsylvania. The main span is a 401-foot (122 m) Pennsylvania (Petit) truss. The structure was originally designed by the Pennsylvania Railroad as a low-level connector between its mainline and Waynesburg Branch. Today, the bridge continues to serve the same purpose that it has since its inception, carrying coal trains between mines and power plants or other industrial sites.
The Point Bridge was a steel cantilever truss bridge that spanned the Monongahela River in Pittsburgh, Pennsylvania.
Bridge in Portage Township is a historic stone arch bridge located at Portage Township in Cambria County, Pennsylvania. It was built by the Allegheny Portage Railroad in 1832, and is an 18-foot-long (5.5 m) bridge, with a semi-circular arch. It is built of coursed ashlar and crosses Bens Creek.
Lilly Bridge is a historic stone arch bridge located at Lilly in Cambria County, Pennsylvania. It was built by the Allegheny Portage Railroad in 1832, and is an 18-foot-long (5.5 m) bridge, with an elliptical shape and curved wingalls. It is built of roughly squared ashlar and crosses Burgoon Run.
The Beaver River Railroad Bridge crosses the Beaver River in New Brighton, Pennsylvania, carrying the tracks of the CSX Railroad. It was built in 1926, to a design by J.F. Leonard, the Pennsylvania Railroad's engineer in charge of bridges and buildings, for the Pittsburgh, Fort Wayne and Chicago Railway. The riveted Warren deck truss main span and riveted deck girder western side spans have a total length of 1,221 feet (372 m). The deck truss spans vary from 122 feet (37 m) to 219 feet (67 m), some of which are unusually shallow and skewed. It replaced an 1887 span, which was converted to road use, continuing in that role until it was replaced in 1985.
The Lehigh Valley Railroad, Delaware River Bridge is an abandoned railway bridge originally built by the Lehigh Valley Railroad over the Delaware River between Easton, Pennsylvania and Phillipsburg, New Jersey. It was constructed by the American Bridge Company in 1901 and 1902 on piers built in 1866.
