2,617 articles
Go Between Bridge
The Go Between Bridge is a four-lane tolled bridge across the Brisbane River between Milton and South Brisbane, Australia, opened to traffic in July 2010.
Godavari Arch Bridge
The Godavari Arch Bridge, also called the Kovvur–Rajahmundry Bridge, is a prestressed concrete bowstring railway bridge over the Godavari River at Rajahmundry, India, opened in 1997.
Goethals Bridge
The Goethals Bridge is a twin-span cable-stayed toll bridge operated by the Port Authority of New York and New Jersey, carrying Interstate 278 between Elizabeth, New Jersey, and Staten Island.
Golden Ears Bridge
The Golden Ears Bridge is a six-lane road bridge over the Fraser River connecting Maple Ridge and Pitt Meadows with Langley and Surrey in British Columbia, opened in 2009.
Golden Gate Bridge
The Golden Gate Bridge is a suspension bridge spanning the Golden Gate Strait connecting San Francisco and Marin County, California; opened in 1937, its 4,200-foot main span was the world's longest.
Goldfields Water Supply Scheme
The Goldfields Water Supply Scheme, also known as the Golden Pipeline, pumps water 560 kilometers from Mundaring Weir to Kalgoorlie, Western Australia. Designed by C. Y. O'Connor, it opened in 1903.
Göltzsch Viaduct
The Göltzsch Viaduct (German: Göltzschtalbrücke) is a brick railway viaduct in the Vogtland region of Saxony, Germany, the largest brick-built bridge in the world at 574 m long and 78 m high.
Gomal Zam Dam
Gomal Zam Dam is a roller-compacted concrete dam on the Gomal River in South Waziristan, Pakistan, completed in 2013 for irrigation, flood control, and 17.4 MW of power.
Gordie Howe International Bridge
The Gordie Howe International Bridge, also called the New International Trade Crossing, is a six-lane cable-stayed bridge connecting Windsor, Ontario, with Detroit, Michigan, opened to traffic in July 2026.
Göta Canal
Göta kanal: 190 km Swedish canal waterway from Sjötorp on Lake Vänern to Mem near the Baltic, 58 locks, built 1810–1832 by Baltzar von Platen with Thomas Telford; now a state-owned tourist waterway.
Gotthard Road Tunnel
The Gotthard Road Tunnel (German: Gotthard-Strassentunnel) is a 16.9-kilometer single-tube motorway tunnel in Switzerland carrying the A2 beneath the Gotthard Pass between Göschenen and Airolo. Opened in 1980, it was the world's longest road tunnel.
Gotthard Road Tunnel fire (2001)
The Gotthard Road Tunnel fire was a collision and blaze on 24 October 2001 in Switzerland's 17-kilometer Gotthard tunnel, killing 11 people and reshaping tunnel safety policy.
Gotthard Road Tunnel fire and structural damage
The Gotthard Road Tunnel fire was a 2001 HGV collision and fire in Switzerland's transalpine road tunnel that killed 11 people and closed the tunnel for two months.
Gotthard Tunnel
The Gotthard Tunnel is a Swiss railway tunnel through the Alps: the 15 km summit tunnel opened in 1882, joined by the 57 km Gotthard Base Tunnel in 2016.
Grade-separated pedestrian crossing
A grade-separated pedestrian crossing is an overpass, footbridge, or underpass that carries pedestrians over a roadway or railway, eliminating conflicts with motor traffic without stopping vehicles.
Gradually varied flow
Gradually varied flow (GVF) is steady, non-uniform open-channel flow in which water depth changes slowly with distance, keeping pressure hydrostatic, as in backwater behind a dam.
Grand Bridge
Grand Bridge (Vanburgh Bridge) is Sir John Vanbrugh's unfinished c.1706-1712 Grade I listed habitable limestone bridge at Blenheim Palace, Oxfordshire, spanning the River Glyme and Capability Brown's lake, with over 30 rooms and a 30 m central arch.
Grand Canal builders of China
The Grand Canal builders of China were the conscripted laborers and officials who dug and ran the world's largest pre-industrial canal, from the fifth century BC to the Qing.
Grand Coulee Dam
Grand Coulee Dam is a concrete dam on the Columbia River in central Washington, the largest hydropower producer in the United States at more than 6,809 megawatts.
Grand Ethiopian Renaissance Dam
The Grand Ethiopian Renaissance Dam (GERD), also called the Millennium Dam, is a hydropower dam on the Blue Nile in Ethiopia, inaugurated in 2025 as Africa's largest hydroelectric facility.
Grand Ethiopian Renaissance Dam dispute
The Grand Ethiopian Renaissance Dam dispute is the unresolved disagreement among Ethiopia, Egypt, and Sudan over filling and operating Ethiopia's dam on the Blue Nile, built starting in 2011.
Grand Inga Dam
The Grand Inga Dam is a proposed hydropower complex at Inga Falls on the Congo River in the Democratic Republic of the Congo, planned at about 39,000 MW.
Grand Union Canal
The Grand Union Canal is the longest canal in the United Kingdom, running 137 miles with 158 locks from the Thames at Brentford, London, to Birmingham.
Granular activated carbon adsorption
Granular activated carbon adsorption is a water treatment process in which dissolved contaminants attach to porous carbon granules with surface areas of about 1,000 square meters per gram.
Gravity dam
A gravity dam is a dam that resists water pressure by its own weight, typically built as a straight wall of mass concrete on a rock foundation.
Grease trap
A grease trap, also called a grease interceptor, is a plumbing device that removes fats, oils, and grease from kitchen wastewater before it reaches the sewer.
Great Belt East Bridge
The Great Belt East Bridge is a Danish suspension bridge carrying the motorway between Zealand and Funen, opened in 1998 with the Great Belt Link.
Great County Adit
The Great County Adit, also called County Adit, is a branching mine drainage tunnel network in Cornwall, begun in 1748, draining mines around Gwennap, Redruth, and St Day.
Great Istanbul Tunnel
The Great Istanbul Tunnel, also called the Grand Istanbul Tunnel, is a proposed three-level road-and-metro tunnel under the Bosphorus in Istanbul, announced in 2015 as the city's third strait crossing.
Great Lakes Waterway
The Great Lakes Waterway is the locks, canals, rivers, and lakes linking the Atlantic to Lake Superior, including the St. Lawrence Seaway, Welland Canal, and Soo Locks, with 15 Seaway-size locks and a late-March-to-late-December season.