TYPES of BRIDGES

Beam Bridge- Consist of a beam/girder spanning the gap between two pillars

Beam Bridges

The Confederation Bridge spans the Abegweit Passage of Northumberland Strait. It links Prince Edward Island with mainland New Brunswick, CA. (Span 12,900 m)

The 26-mile Jiaozhou Bay bridge, which was built over the course of four years for $1.5 billion, links China’s eastern port city of Qingdao to an offshore island, Huangdao, It is supported by more than 5,000 pillars, is expected to carry more than 30,000 cars per day.

Arch Bridge- Arches are curved and carry weight outward along the curve to the

supports at each end called abutments

Arch Bridges

The Garabit Viaduct is a railway arch bridge spanning the River Truyère near Ruynes-en-Margeride, Cantal, France, in the mountainous Massif Central region. (Length 565 m)

The Iron Bridge crosses the River Severn in Shropshire, England. It was the first arch bridge in the world to be made of cast iron, a material which was previously too expensive to use for large structures

Trusses and Struts-Truss bridges are similar to beam bridge, but much stronger

- Connected by members that support the load. - Most truss supports consist of members interconnected in

triangles, a strut connects these trusses together

Truss BridgesThe Forth Bridge is a cantilever railway bridge over the Firth of Fort in the east of Scotland, 9 miles (14 kilometres) west of central Edinburgh. It was opened on 4 March 1890 and spans a total length of 8,296 feet

The Quebec Bridge is a road, rail and pedestrian bridge across the lower Saint Lawrence River to the west of Quebec City, and Lévis, Quebec, Canada. The project failed twice, at the cost of 88 lives, and took over 30 years to complete. (length 979 m)

Suspension Bridges-Cables support bridge from above the pillars and are secured at either end

at points called anchorages

Suspension Bridges

The Lions Gate Bridge, opened in 1938, officially known as the First Narrows Bridge, is a suspension bridge that crosses the first narrows of Burrard Inlet and connects the City of Vancouver, British Columbia. (Length 1823 m)

The Golden Gate Bridge is a suspension bridge spanning the Golden Gate strait, the mile-wide, three-mile-long channel between San Francisco Bay and the Pacific Ocean (Length 2737 m)