A cantilever bridge is a bridge built using structures that project horizontally into space, supported on only one end. For small footbridges, the cantilevers may be simple beams; however, large cantilever bridges designed to handle road or rail traffic use trusses built from structural steel, or box girders built from prestressed concrete.
The Burlington Bay James N. Allan Skyway, originally called the Burlington Bay Skyway and simply known as the Burlington Skyway or The Skyway, is a pair of high-level freeway bridges spanning the Burlington Bay Canal. The Skyway, as it is locally known, is located in Hamilton and Burlington, Ontario, Canada, and is part of the Queen Elizabeth Way (QEW) highway linking Fort Erie with Toronto. The 1958 steel bridge is a suspended deck through-arch truss bridge. The approach to the main span has elements of a through-truss bridge, but the arch shape takes the truss higher than the roadway deck, so hangers are used to suspend the deck from the arch truss. The truss bridge is 2,560 m (8,400 ft) long overall. The main span of 151 m (495 ft) is flanked by two back spans each 83.7 m (275 ft) long; there are 72 total approach spans, and the bridge has 36.7 m (120 ft) of vertical clearance below the bottom of the deck. The girder bridge, completed in 1985, is 335 m (1,099 ft) shorter. The roadway deck for each bridge is 30 m (97 ft) wide.
A box girder bridge, or box section bridge, is a bridge in which the main beams comprise girders in the shape of a hollow box. The box girder normally comprises prestressed concrete, structural steel, or a composite of steel and reinforced concrete. The box is typically rectangular or trapezoidal in cross-section. Box girder bridges are commonly used for highway flyovers and for modern elevated structures of light rail transport. Although the box girder bridge is normally a form of beam bridge, box girders may also be used on cable-stayed and other bridges.
The eastern span replacement of the San Francisco–Oakland Bay Bridge was a construction project to replace a seismically unsound portion of the Bay Bridge with a new self-anchored suspension bridge (SAS) and a pair of viaducts. The bridge is in the U.S. state of California and crosses the San Francisco Bay between Yerba Buena Island and Oakland. The span replacement took place between 2002 and 2013, and is the most expensive public works project in California history, with a final price tag of $6.5 billion, a 2,500% increase from the original estimate of $250 million, which was an initial estimate for a seismic retrofit of the span, not the full span replacement ultimately completed. Originally scheduled to open in 2007, several problems delayed the opening until September 2, 2013. With a width of 258.33 ft (78.74 m), comprising 10 general-purpose lanes, it is the world's widest bridge according to Guinness World Records.
Jamuna Multi-purpose Bridge is a bridge opened in Bangladesh in June 1998. It connects Bhuapur on the Jamuna River's east bank to Sirajganj on its west bank. It was the 11th longest bridge in the world when constructed in 1998 and at present is the 6th longest bridge in South Asia. The Jamuna River, which it spans, is one of the three major rivers of Bangladesh, and is fifth largest in the world in discharge volume.
The Narrows Bridge is a freeway and railway crossing of the Swan River in Perth, Western Australia.
Mahatma Gandhi Setu is a bridge over the river Ganges in Bihar, India, connecting Patna in the south to Hajipur in the north. Its length of 5,750 metres (18,860 ft) makes it the fourth-longest river bridge in India. It was inaugurated in May 1982 in a ceremony in Hajipur by then-prime minister Indira Gandhi. From 1982 to 2017, Mahatma Gandhi Setu remained the longest bridge in India. Later, the Gandhi Setu rehabilitation project was undertaken to install triangular steel trusses on Mahatma Gandhi Setu.
A gantry crane is a crane built atop a gantry, which is a structure used to straddle an object or workspace. They can range from enormous "full" gantry cranes, capable of lifting some of the heaviest loads in the world, to small shop cranes, used for tasks such as lifting automobile engines out of vehicles. They are also called portal cranes, the "portal" being the empty space straddled by the gantry.
A segmental bridge is a bridge built in short sections, i.e., one piece at a time, as opposed to traditional methods that build a bridge in very large sections. The bridge is made of concrete that is either cast-in-place or precast concrete.
The Bandra–Worli Sea Link is a 5.6 km long, 8-lane wide cable-stayed bridge that links Bandra in the Western Suburbs of Mumbai with Worli in South Mumbai. It is the second longest sea bridge after Mumbai Trans Harbour Link, as well as the 5th longest bridge in India after Mumbai Trans Harbour Link, Bhupen Hazarika Setu, Dibang River Bridge and Mahatma Gandhi Setu. It contains pre-stressed concrete-steel viaducts on either side. It was planned as a part of the proposed Western Freeway that would link the Western Suburbs to Nariman Point in Mumbai's main business district, but is now planned to become part of the Coastal Road to Kandivali.
The M5 is an expressway in the City of Cape Town Metropolitan Municipality, South Africa. It connects Milnerton on the Western Seaboard in the north to Muizenberg in the south, and crosses both the N1 and the N2. For part of its length, from the N1 interchange to Plumstead, it is a limited-access freeway (motorway). From Mowbray to Muizenberg it is parallel to the M4 Main Road.
Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast beams, and wall panels, floors, roofs, and piles. In contrast, cast-in-place concrete is poured into site-specific forms and cured on site.
An overhead crane, commonly called a bridge crane, is a type of crane found in industrial environments. An overhead crane consists of two parallel rails seated on longitudinal I-beams attached to opposite steel columns by means of brackets. The traveling bridge spans the gap. A hoist, the lifting component of a crane, travels along the bridge. If the bridge is rigidly supported on two or more legs running on two fixed rails at ground level, the crane is called a gantry crane or a goliath crane.
Perai River Bridge is a dual-three lane cable stayed bridge that straddles the Perai River in Seberang Perai, Penang, Malaysia. It is part of the Butterworth Outer Ring Road (BORR).
The John F. Kennedy Memorial Causeway is a paved highway located in Corpus Christi, Texas. The causeway crosses the Laguna Madre and connects North Padre Island with Flour Bluff on the Texas mainland.
Incremental launch is a method in civil engineering of building a complete bridge deck from one abutment of the bridge only, manufacturing the superstructure of the bridge by sections to the other side. In current applications, the method is highly mechanised and uses pre-stressed concrete.
A launching gantry is a special-purpose mobile gantry crane used in bridge construction, specifically segmental bridges that use precast box girder bridge segments or precast girders in highway and high-speed rail bridge construction projects. The launching gantry is used to lift and support bridge segments or girders as they are placed while being supported by the bridge piers instead of the ground.
The Harbor Bridge Project is the replacement of the existing through arch bridge that crosses the Corpus Christi Ship Channel, which serves the Port of Corpus Christi in Corpus Christi, Texas, with a modern cable-stayed bridge design. The route will connect with SH 286 at its southern terminus and US 181 on the north. Groundbreaking on construction took place on August 8, 2016 and was scheduled to be completed by the spring of 2020, but was extensively delayed by engineering and design issues, and is tentatively planned to be completed in 2025.
The SLJ900/32 or otherwise known as the Iron Monster is a superheavy launching gantry and one of the largest and most ubiquitous in the world. At over 90 meters in length, the SLJ900/32 is also one of the world's longest terrestrial vehicles. It is built by the Beijing Wowjoint Machinery Company and designed by the Shijiazhuang Railway Design Institute.
The Long Beach International Gateway, originally known as the Gerald DesmondBridge Replacement, is a cable-stayed bridge that carries six lanes of Interstate 710 and a bicycle/pedestrian path in Long Beach, California, west across the Back Channel to Terminal Island. The bridge replaced the Gerald Desmond Bridge, which was completed in 1968 and named after Gerald Desmond, a prominent civic leader and a former city attorney for the City of Long Beach.
![Underslung (lower-beam) movable scaffolding system used during construction of the Aurachtalbrucke Emskirchen [de] (2015) Aurachtalbrucke-Emskirchen-01.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Aurachtalbr%C3%BCcke-Emskirchen-01.jpg/330px-Aurachtalbr%C3%BCcke-Emskirchen-01.jpg)
