Great Crossings Bridge | |
---|---|
Coordinates | 39°45′19″N79°23′48″W / 39.755411°N 79.396735°W |
Crosses | Youghiogheny River |
Locale | Confluence, Pennsylvania |
Characteristics | |
Design | Stone arch bridge |
Total length | 375 ft (114 m) |
Width | 30 ft (9 m) |
Height | 40 ft (12 m) |
History | |
Construction start | 1815 |
Opened | 4 July 1818 |
Location | |
The Great Crossings Bridge is a masonry bridge which is on the National Road between Somerset County and Fayette County, Pennsylvania. It crosses the Youghiogheny River near Confluence, Pennsylvania.
Built during the early nineteenth century, near a ford that had been in use by Europeans since George Washington's 1753 journey to Fort LeBoeuf, the 375-foot (114 m) long, 40-foot (12 m) high, 30-foot (9.1 m) wide sandstone bridge with three arches was erected between 1813 and 1818 by James Kinkead, James Beck and Evan Evans, and was dedicated on July 4, 1818 at an event attended by President James Monroe. [1]
The town of Somerfield, Pennsylvania, which was originally named Smythfield, was built at the eastern end of the bridge in 1817. The bridge and town were later inundated by Youghiogheny River Lake, [1] a reservoir that began filling in 1940. [2]
The bridge remains standing in the reservoir, just downstream from the present U.S. Route 40 bridge. [1] [3] The bridge is normally submerged year-round, but is occasionally accessible during periods of drought when the water level in the lake drops significantly. While the normal low-water mark during winter is at an elevation of 1,419 feet (433 m), the top of the bridge is visible at 1,392 feet (424 m) and the deck is exposed at 1,384 feet (422 m). [4] [5]
In November 2024, a drought completely exposed the Great Crossings Bridge as well as the remains of the city of Somerville. Over 10,000 people have visited the location since the bridge was exposed. [6]
The National Road was the first major improved highway in the United States built by the federal government. Built between 1811 and 1837, the 620-mile (1,000 km) road connected the Potomac and Ohio Rivers and was a main transport path to the West for thousands of settlers. When improved in the 1830s, it became the second U.S. road surfaced with the macadam process pioneered by Scotsman John Loudon McAdam.
Somerset County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 74,129. Its county seat is Somerset. The county was created from part of Bedford County on April 17, 1795, and named after the county of Somerset in England. The county is part of the Southwest Pennsylvania region of the state.
Connellsville is a city in Fayette County, Pennsylvania, United States, 36 miles (58 km) southeast of Pittsburgh and 50 miles (80 km) away via the Youghiogheny River, a tributary of the Monongahela River. It is part of the Pittsburgh metropolitan area. The population was 7,031 at the 2020 census.
Lake Travis is a reservoir on the Colorado River in central Texas in the United States. It is named in honor of William B. Travis.
The Monongahela River, sometimes referred to locally as the Mon, is a 130-mile-long (210 km) river on the Allegheny Plateau in north-central West Virginia and Southwestern Pennsylvania. The river flows from the confluence of its west and east forks in north-central West Virginia northeasterly into southwestern Pennsylvania, then northerly to Pittsburgh and its confluence with the Allegheny River to form the Ohio River. The river includes a series of locks and dams that makes it navigable.
The Cowlitz River is a river in the state of Washington in the United States, a tributary of the Columbia River. Its tributaries drain a large region including the slopes of Mount Rainier, Mount Adams, and Mount St. Helens.
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Lake Powell is a reservoir on the Colorado River in Utah and Arizona, United States. It is a major vacation destination visited by approximately two million people every year. It holds 24,322,000 acre-feet (3.0001×1010 m3) of water when full, second in the United States to only Lake Mead - though Lake Mead has fallen below Lake Powell in size several times during the 21st century in terms of volume of water, depth and surface area.
The Youghiogheny River, or the Yough for short, is a 134-mile-long (216 km) tributary of the Monongahela River in West Virginia, Maryland, and Pennsylvania. It drains an area on the west side of the Allegheny Mountains northward into Pennsylvania, providing a small watershed in extreme western Maryland into the tributaries of the Mississippi River. Youghiogheny is a Lenape word meaning "a stream flowing in a contrary direction".
The Sevier River is a 400-mile (640 km)-long river in the Great Basin of southwestern Utah in the United States. Originating west of Bryce Canyon National Park, the river flows north through a chain of high farming valleys and steep canyons along the west side of the Sevier Plateau before turning southwest and terminating in the endorheic basin of Sevier Lake in the Sevier Desert. It is used extensively for irrigation along its course, with the consequence that Sevier Lake is usually dry.
Tuttle Creek Lake is a reservoir on the Big Blue River 5 miles (8 km) north of Manhattan, in the Flint Hills region of northeast Kansas. It was built and is operated by the Army Corps of Engineers for the primary purpose of flood control. Secondary functions of the project include release of water stores to maintain barge traffic on the Mississippi River during seasons of drought, maintenance of a multi-use conservation pool for fish and wildlife enhancement and recreation, and release of sufficient water in droughts to maintain water quality for downstream communities.
Lake Hartwell is a man-made reservoir bordering Georgia and South Carolina and encompassing parts of the Savannah, Tugaloo, and Seneca rivers. Lake Hartwell is one of the largest recreation lakes in the Southeastern United States. It was created by the construction of the Hartwell Dam, completed in 1962 and located on the Savannah River seven miles (11 km) below the point where the Tugaloo and Seneca Rivers join to form the Savannah. Extending 49 miles (79 km) up the Tugaloo and 45 miles (72 km) up the Seneca at normal pool elevation, the lake comprises nearly 56,000 acres (230 km2) of water with a shoreline of 962 miles (1,548 km). The entire Hartwell reservoir project contains 76,450 acres (309 km2) of land and water. Interstate highway 85 bisects Lake Hartwell, making the area easily accessible to visitors.
Ohiopyle State Park is a Pennsylvania state park on 20,500 acres (8,300 ha) in Dunbar, Henry Clay and Stewart Townships, Fayette County, Pennsylvania in the United States. The focal point of the park is the more than 14 miles (23 km) of the Youghiogheny River gorge that passes through the park. The river provides whitewater boating, recreational fishing, and kayaking. Ohiopyle State Park is bisected by Pennsylvania Route 381 south of the Pennsylvania Turnpike. The park opened to the public in 1965 but was not officially dedicated until 1971.
The Youghiogheny River Lake is a flood control reservoir that is located in southwestern Pennsylvania and western Maryland. It is a significant tourist attraction that brings in more than one million visitors a year to the area.
The Loch Raven Reservoir is a reservoir that provides drinking water for the City of Baltimore and most of Baltimore County, Maryland. It is fed by the Big Gunpowder Falls river, and has a capacity of 23 billion US gallons (87,000,000 m3) of water.
The Memorial Bridge is a structure that crosses the Youghiogheny River, connecting the eastern and western shores of Connellsville, Pennsylvania, US.
Stafford Meadow Brook is a tributary of the Lackawanna River in Lackawanna County, Pennsylvania, in the United States. It is approximately 11.2 miles (18.0 km) long and flows through Roaring Brook Township, Scranton, and Moosic. The watershed of the stream has an area of 14.1 square miles (37 km2). Part of it is designated as a High-Quality Coldwater Fishery and a Migratory Fishery. The other part is a Warmwater Fishery and a Migratory Fishery. The stream has one named tributary, which is known as Mountain Lake Run. Stafford Meadow Brook has a very high level of water quality for much of its length and part of it meets the criteria for an Exceptional Value designation. The stream begins on the Pocono Plateau and flows through the Moosic Mountains in a mountainous watershed. Its channel has been substantially altered in its lower reaches.
Blair Gap, one of the gaps of the Allegheny, is a water gap along the eastern face atop the Allegheny Front escarpment. Like other gaps of the Allegheny, the slopes of Blair Gap were amenable to foot travel, pack mules, and possibly wagons allowing Amerindians, and then, after about 1778–1780 settlers, to travel west into the relatively depopulated Ohio Country decades before the railroads were born and tied the country together with steel.