2,617 articles
Roseman Covered Bridge
Roseman Covered Bridge is a historic 1883 timber covered bridge over the Middle River near Winterset, Iowa, one of six surviving covered bridges in Madison County.
Ross Dam
Ross Dam is a 540-foot concrete arch dam on the Skagit River in Whatcom County, Washington, built between 1937 and 1949 and operated by Seattle City Light.
Ross River Dam
Ross River Dam is an earth and rock fill dam on the Ross River near Townsville, Queensland, completed in 1970 for flood control and water supply.
Rotherhithe Tunnel
The Rotherhithe Tunnel is a single-bore road tunnel under the River Thames in east London, connecting Rotherhithe with Shadwell. Built between 1904 and 1908, it remains toll-free today.
Rove Tunnel
The Rove Tunnel (tunnel du Rove) is a disused canal tunnel near Marseille, France, linking the port to the Étang de Berre; closed since a 1963 collapse, it remains the world's longest canal tunnel.
Roving bridge
A roving bridge, also called a turnover or snake bridge, carries a canal towpath across the water so a towing horse can cross without detaching the towline.
Royal Albert Dock, Liverpool
The Royal Albert Dock is a complex of Grade I listed dock warehouses on Liverpool's waterfront, built in 1843–7 to Jesse Hartley's design and regenerated as a visitor attraction.
Royal Gorge Bridge
The Royal Gorge Bridge is a suspension bridge across the Arkansas River in the Royal Gorge near Cañon City, Colorado, built in 1929 as a tourist attraction.
Royal Road
The Royal Road, also called the Persian Royal Road, was the main highway of the Persian Empire, running from Sardis to Susa under Darius I.
Royal School of Military Engineering
The Royal School of Military Engineering, also called the School of Military Engineering, Chatham, is the British Army's training establishment for the Royal Engineers, founded at Chatham in 1812.
Rubble mound breakwater
A rubble mound breakwater is the most common breakwater type, built of a stone core, filter layer, and armor layer, tolerating settlement and degrading gradually rather than failing suddenly.
Runcorn Railway Bridge
The Runcorn Railway Bridge, also known as the Ethelfleda Bridge, is a Grade II listed railway bridge crossing the River Mersey between Runcorn and Widnes, opened in 1868.
Runyang Bridge
The Runyang Bridge (Runyang Yangtze River Highway Bridge) crosses the Yangtze River between Zhenjiang and Yangzhou in Jiangsu, China; opened in 2005, its 1,490 m suspension span was then China's longest.
Rutland Water
Rutland Water, also called Empingham Reservoir, is a pumped storage reservoir in Rutland, England, created by damming the River Gwash and completed in 1976 to supply drinking water to the East of England.
Rutting
Rutting is permanent deformation of a flexible pavement in the wheel path, accumulating with traffic and high temperatures, and one of the controlling distress modes in asphalt pavement design.
Ryfast
Ryfast is a road project in Rogaland, Norway, completed in 2020, giving Ryfylke a ferry-free link to Stavanger through three tunnels, including the world's longest subsea road tunnel.
Saadiyat Island
Saadiyat Island is a natural island near Abu Dhabi, United Arab Emirates, developed since the 2000s as the emirate's cultural district, home to Louvre Abu Dhabi.
Sabaean irrigation canals of Marib
The Sabaean irrigation canals of Marib were a network of canals and sluices in Yemen that spread Wādī Dhana floodwater over nearly 10,000 hectares in antiquity.
Sachs Covered Bridge
Sachs Covered Bridge, also known as Sauck's Bridge, is a historic covered bridge over Marsh Creek near Gettysburg, Pennsylvania, used by both armies in the 1863 Battle of Gettysburg.
Sacyr
Sacyr, founded in 1986 as Sociedad Anónima de Caminos y Regadíos, is a Spanish infrastructure company in Madrid known for transport, social, and water concessions worldwide.
Sadd el-Kafara
Sadd el-Kafara is the ruin of an Old Kingdom Egyptian dam in the Wadi el-Garawi, one of the world's oldest known large dams, built around 2700 to 2600 BC.
Saemangeum Seawall
The Saemangeum Seawall (새만금방조제) is a 33.9 km embankment on South Korea's west coast, described as the world's longest seawall, built from 1991 to 2010.
Safe Drinking Water Act
The Safe Drinking Water Act (SDWA) is the 1974 United States federal law authorizing the EPA to set national health-based standards for the nation's public drinking water supply.
Safety and working environment in shield tunnelling
Safety in shield tunnelling is the occupational control regime for shield machines: hyperbaric working rules, chamber entry, ventilation and fire management, and ground control during mining and ring erection.
Saimaa Canal
The Saimaa Canal (Saimaan kanava) connects Lake Saimaa in Finland with the Gulf of Finland near Vyborg; first completed in 1856, it runs partly through leased Russian territory.
Saint Lawrence Seaway
The Saint Lawrence Seaway is a binational system of locks and canals, built by Canada and the United States, carrying ocean vessels from the Atlantic to Duluth, Minnesota.
Saint Petersburg Dam
The Saint Petersburg Dam, or Leningrad Dam, is a 25.4 km storm surge barrier protecting Saint Petersburg from Gulf of Finland floods; completed in 2011, it is the world's longest.
Saint-Thibéry Roman Bridge
Saint-Thibéry Roman Bridge (pont dit romain de Saint-Thibéry): ruined stone arch bridge over the Hérault at Saint-Thibéry, France. Long called Roman and tied to the Via Domitia at Cessero, its surviving masonry is medieval (c. 1150–1250), nine arches, four remain, classified 1862.
Saint-Venant torsion
Saint-Venant torsion, also called uniform or pure torsion, is the classical elasticity theory of how a prismatic bar of arbitrary cross-section twists under torque, formulated by Saint-Venant in 1855.
Saline Water Conversion Corp
Saline Water Conversion Corp (المؤسسة العامة لتحلية المياه المالحة), known as SWCC, was a Saudi government corporation that desalinated seawater, established by royal decree in 1974.