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Fontenelle Dam
Fontenelle Dam is an earthfill dam on the Green River in Wyoming, completed in 1964 and best known for a near-failure from seepage in 1965.
Footbridge
A footbridge, also called a pedestrian overpass or overcrossing, is a bridge that carries pedestrians, and sometimes cyclists, over roads, railways, or rivers without vehicular traffic.
Footbridge safety and failure patterns
Footbridge safety and failure patterns describe how pedestrian walking forces, at roughly 1.0–3.0 Hz, can resonate with footbridges, making vibration serviceability, not strength, the frequent governing design check.
Footbridges in China
Footbridges in China span two traditions: modern urban pedestrian overpasses and ancient covered timber bridges, with more than 3,000 timber corridor bridges (langqiao).
Footbridges in Japan
Footbridges in Japan are pedestrian bridges, about 11,235 nationwide, mostly built in the 1955 to 1973 high-growth era and now aging, with removal an active policy option.
Footbridges in the United Kingdom
Footbridges in the United Kingdom are bridges carrying pedestrians over roads, railways, or water. Britain's railway network alone has almost 2,400, most owned by Network Rail.
Former and decommissioned reservoirs of Europe
Former and decommissioned reservoirs of Europe are impounding basins permanently emptied or drawn down, by full demolition, notch cutting, or draining, with documented cases including Krebsbach Dam and Lower Neuadd.
Formwork
Formwork, also known as concrete forms, is the total system of molds and supports for freshly placed concrete, shaping it until it sets and can carry its own weight.
Fort Peck Dam
Fort Peck Dam is a large earthen dam on the upper Missouri River in northeastern Montana, built from 1933 and operated by the U.S. Army Corps of Engineers since 1940.
Fort Pitt Bridge
The Fort Pitt Bridge is a double-decked steel tied arch bridge in Pittsburgh, Pennsylvania, opened in 1959 to carry Interstates 279 and 376 across the Monongahela River into downtown.
Fort Randall Dam
Fort Randall Dam is an earthen dam on the Missouri River near Pickstown, South Dakota, impounding Lake Francis Case and generating 320 megawatts of hydroelectric power.
Forth and Clyde Canal
The Forth and Clyde Canal is a 35-mile ship canal in Scotland linking Grangemouth to Bowling, opened in 1790 and recognized as the world's first sea-to-sea ship canal.
Forth Road Bridge
The Forth Road Bridge is a suspension bridge crossing the Firth of Forth between South Queensferry, near Edinburgh, and North Queensferry in Fife, opened in 1964.
Foundation and geotechnical failure of bridges
Foundation and geotechnical failure of bridges is collapse or severe distress caused by the soil and rock supporting a bridge, through settlement, liquefaction, lateral spreading, and embankment instability.
Four Major Rivers Restoration Project
The Four Major Rivers Restoration Project was a 2009 to 2012 South Korean public works program that dredged the Han, Nakdong, Geum, and Yeongsan rivers.
Fourteen Locks
Fourteen Locks, also known as the Cefn Flight, is a flight of fourteen canal locks at Rogerstone near Newport, South Wales, built in 1799 and lifting the canal about 168 feet.
Foxton Locks
Foxton Locks is a flight of ten staircase canal locks on the Grand Union Canal in Leicestershire, England, built between 1810 and 1814 to raise the canal 75 feet.
Francis Scott Key Bridge (Baltimore)
The Francis Scott Key Bridge was a 1.6-mile steel truss bridge carrying Interstate 695 over the Patapsco River at Baltimore's outer harbor; opened in 1977, it collapsed in 2024 after a ship strike.
Francis Scott Key Bridge collapse
The Francis Scott Key Bridge collapse occurred on March 26, 2024, when the containership Dali lost power and struck the bridge in Baltimore, killing six workers.
Francis Scott Key Bridge replacement
The Francis Scott Key Bridge replacement, also called the Key Bridge replacement, is a cable-stayed bridge being built across the Patapsco River in Baltimore after the original collapsed in 2024.
Franklin Dam controversy
The Franklin Dam controversy, known as the Gordon below Franklin Scheme, was an Australian conservation battle of the late 1970s and early 1980s over a proposed dam in south-west Tasmania.
Freeboard (hydrology)
Freeboard in hydrology is the vertical distance between the design water surface and the top of a dam, levee, or channel, kept as a margin against uncertainty.
Freeze desalination
Freeze desalination is a desalination method in which saline water is cooled until pure ice crystals form, excluding salt, then washed and melted into freshwater.
Fréjus Road Tunnel
The Fréjus Road Tunnel is a 12,868 m motorway tunnel under the Alps connecting Modane, France, with Bardonecchia, Italy. Built between 1974 and 1980, it gained a second tube in 2025.
French drain
A French drain, also called a rubble drain, is a sloped gravel-filled trench with a perforated pipe that carries water away, named for Henry Flagg French.
Fresh Kills Landfill
Fresh Kills Landfill was a municipal landfill on Staten Island, New York City, operating from 1948 to 2001 and once the largest in the United States.
Freyssinet (company)
Freyssinet is a French specialist civil engineering company founded in 1943 by Eugène Freyssinet, best known for prestressed concrete and post-tensioning; it is part of Soletanche Freyssinet within VINCI Construction.
Friant Dam
Friant Dam is a concrete gravity dam on the San Joaquin River near Fresno, California, built 1939 to 1942; it impounds Millerton Lake and feeds the Central Valley Project.
Friant-Kern Canal
The Friant-Kern Canal is a 152-mile irrigation canal in Central California, running from Friant Dam on the San Joaquin River to the Kern River near Bakersfield.
Friction pendulum bearing
The friction pendulum bearing, or Friction Pendulum System, is a seismic isolation device patented by Victor Zayas in 1987 that supports buildings on a spherical sliding surface.