5,208 articles
ʻIolani Palace
ʻIolani Palace in downtown Honolulu, built from 1879 to 1882, is the only royal palace in the United States and now a museum and National Historic Landmark.
I-35W Mississippi River bridge
The I-35W Mississippi River bridge was an eight-lane steel deck truss bridge in Minneapolis, opened in 1967, that collapsed on August 1, 2007, killing 13 and injuring 145.
I-35W Mississippi River bridge collapse
The I-35W Mississippi River bridge collapse was the August 1, 2007, failure of an eight-lane Interstate 35W bridge in Minneapolis, Minnesota, that killed 13 people and injured 145.
I-35W Saint Anthony Falls Bridge
The I-35W Saint Anthony Falls Bridge is a ten-lane concrete bridge carrying Interstate 35W over the Mississippi River in Minneapolis, opened September 2008 to replace the bridge that collapsed in 2007, killing 13 people.
I-395 Signature Bridge
The I-395 Signature Bridge, formally the Fountain Bridge, is a six-arch concrete bridge carrying Interstate 395 through downtown Miami, set to become the largest concrete segmental arch bridge in the United States.
I-40 bridge disaster
The I-40 bridge disaster, also known as the Webbers Falls bridge collapse, killed 14 people near Webbers Falls, Oklahoma, when a barge struck the bridge in 2002.
I-beam
An I-beam, also called a universal beam or rolled steel joist, is a structural beam with an I-shaped cross-section whose flanges and web make it efficient in bending.
I-joist
An I-joist is a prefabricated engineered wood joist with an I-shaped cross section, used for floor framing and roof rafters in residential construction since 1969.
Ian McHarg
Ian McHarg (1920–2001) was a Scottish-born landscape architect and planner who taught at the University of Pennsylvania and wrote Design with Nature (1969), the pioneering book on ecological planning.
Ibrahimiya Canal
The Ibrahimiya Canal is a major irrigation canal in Egypt that draws water from the Nile at Assiut, built from 1867 to 1873 under Isma'il Pasha.
ICC Forensics
ICC Forensics is a forensic engineering firm in Sugar Land, Texas, founded in 2020 by Matt Gardiner and Jim Wiethorn to serve the crane, rigging, and construction industry.
Ice house (building)
An ice house is a building or pit for storing winter ice and snow for use in summer, chiefly to chill food and drinks before mechanical refrigeration.
Idukki Dam (ഇടുക്കി അണക്കെട്ട്)
Idukki Dam (ഇടുക്കി അണക്കെട്ട്), also known as Idukki arch dam, is a 168.91 m concrete arch dam on the Periyar River in Kerala, India, completed in 1974.
IFEMA Exhibition Centre
The IFEMA Exhibition Centre (Recinto Ferial de Madrid, also called Feria de Madrid) is Madrid's trade fair complex, offering 200,000 m² in 13 halls since 1991.
Igloo
An igloo (Inuit iglu) is a dome-shaped winter dwelling built of blocks of hard snow, associated above all with the Central Inuit of the Canadian Arctic.
Ikadatsu Dam (筏津ダム)
Ikadatsu Dam is a concrete gravity dam on the Niyodo River in Kōchi Prefecture, Japan, built between 1956 and 1958 and operated by Shikoku Electric Power for hydroelectric generation.
Il Redentore
Il Redentore, the Church of the Most Holy Redeemer, is a votive church on the Giudecca in Venice, designed by Andrea Palladio in fulfillment of a Senate vow made during the plague of 1576.
Ilısu Dam
Ilısu Dam (Ilısu Barajı) is a concrete-faced rock-fill dam on the Tigris River in southeastern Turkey, completed in 2020 with 1,208.6 MW, the largest dam on the Tigris.
Illinois and Michigan Canal
The Illinois and Michigan Canal is a 96-mile waterway in northeastern Illinois, opened in 1848 to link Lake Michigan at Chicago with the Illinois River at LaSalle.
Illinois Structural Health Monitoring Project
The Illinois Structural Health Monitoring Project is a University of Illinois research program developing wireless smart sensor systems for civil infrastructure, deployed on the Jindo Bridge in South Korea.
Illinois Waterway locks and dams
The Illinois Waterway locks and dams are federal structures on a 268-mile, 9-foot channel from Joliet to near Beardstown, carrying barge traffic between Lake Michigan and the Mississippi.
Imam Khomeini International Airport
Imam Khomeini International Airport, also known as Imam Khomeini Airport, is Iran's main international airport serving Tehran, built to replace Mehrabad and inaugurated in 2004 after a year-long closure.
Imam Reza Shrine
The Imam Reza Shrine is the religious complex around the tomb of Ali al-Reza, the eighth Shia imam, in Mashhad, Iran, drawing about 20 million pilgrims a year.
IMAX Sydney
IMAX Sydney, formerly known as the LG IMAX Theatre, is a large-format cinema at Darling Harbour in Sydney, Australia, reopened in 2023 with one of the world's largest screens.
Imhoff tank
The Imhoff tank, patented as the Emscherbrunnen in 1906, is a two-story wastewater treatment tank that settles sewage in an upper compartment and digests the sludge anaerobically below.
Immersed tube
An immersed tube, also called an immersed tunnel, is a subaqueous tunnel of prefabricated elements floated out, sunk into a dredged trench, and joined underwater.
Immersed tube tunnel
An immersed tube tunnel is an underwater tunnel built by sinking prefabricated tube elements into a trench and joining them underwater, first used in Boston Harbor in 1893.
Immovable Ladder
The Immovable Ladder is a wooden ladder on a window ledge of Jerusalem's Church of the Holy Sepulchre, unmoved since at least 1728 because the Status Quo requires consent of all six custodian churches to move it.
Imnam Dam (임남댐)
Imnam Dam, also called Geumgangsan Dam, is a dam on the upper Bukhan River in Kangwon-do, North Korea, built for hydroelectric generation and completed in 2003.
Impact Arena (อิมแพ็ค อารีน่า)
Impact Arena (อิมแพ็ค อารีน่า) is a 12,000-seat multi-purpose indoor arena in Nonthaburi, on the northern edge of Bangkok, built in 1997 for the 1998 Asian Games.