Centennial Bridge, Panama

Centennial Bridge, Panama

Infobox_Bridge
bridge_name= Centennial Bridge


caption=
official_name= Puente Centenario
also_known_as=
carries= 6 lanes of the Pan-American Highway
crosses= Gaillard Cut of the Panama Canal
locale= Panama
maint=
id=
design= Cable-stayed bridge
mainspan= 420 m (1,378 ft)
length= 1,052 m (3,451 ft)
width=
clearance=
below= 80 m (262 ft)
traffic=
open= 15 August, 2004
closed=
toll=
map_cue=
map_

map_text=
map_width=
coordinates=coord|9|1|48.1866|N|79|38|8.4732|W|region:PA_type:landmark|display=inline,title
lat=
long=

Panama's Centennial Bridge ( _es. Puente Centenario) is a major bridge crossing the Panama Canal, and hence connecting North and South America. It was built to supplement the overcrowded Bridge of the Americas, and to replace it as the carrier of the Pan-American Highway; upon its opening in 2004, it became only the second permanent crossing of the canal.

Description

The Centennial Bridge is only the second major road crossing of the Panama Canal, the first being the Bridge of the Americas. (Small service bridges are built in to the lock structures at Miraflores and Gatún Locks, but these bridges are only usable when the lock gates are closed, and have limited capacity.)

The Centennial Bridge is located 15 km (9 miles) north of the Bridge of the Americas, and crosses the Gaillard Cut close to the Pedro Miguel locks. New freeway sections, connecting Arraijan in the west to Cerro Patacon in the east via the bridge, significantly alleviate congestion on the Bridge of the Americas.

History

The Bridge of the Americas, which opened in 1962, was the only major road crossing of the Panama Canal. The traffic over this bridge was originally around 9,500 vehicles per day; however, this expanded over time, and by 2004 the bridge was carrying 35,000 vehicles per day.

Since the bridge represented a major bottleneck in the Pan-American Highway, Panama's Ministry of Public Works requested tenders for a second canal crossing in October 2000. [ [http://www.roadtraffic-technology.com/projects/puente/index.html "Puente Centenario - Second Panama Canal Crossing"] , from Road Traffic Technology] The contract to build a replacement bridge was awarded in March 2002. An ambitious schedule of just 29 months was set for construction, in order that the bridge could open on the 90th anniversary of the first ship transit of the Panama Canal by the cargo ship "Ancon," on 15 August 1914. The bridge was named for Panama's centennial, which occurred on 3 November 2003.

The new bridge was designed by a joint venture between TY Lin International and the Louis Berger Group Inc. Boston-based transportation architect Miguel Rosales from Rosales + Partners created the concept and initial aesthetic designs for the Panama-Centennial Bridge. Structural and construction engineering contracts were awarded to Leonhardt, Andrä and Partner and construction to german based Bilfinger Berger.

The bridge was inaugurated on schedule on 15 August 2004, although it was opened for traffic on 2 September 2005, when the new highways leading to it were finished. [es icon [http://www.lachorrera.com/inicio/noticias/economia/35.aspx "Apertura de Accesos al Segundo Puente sobre El Canal de Panamá"] , from La Chorrera]

Construction

The bridge is a cable-stayed design with a total span of 1,052 m (3,451 ft). The main span is 320 m (1,050 ft), and clears the canal by 80 m (262 ft), allowing large vessels to pass below it. The bridge is supported by two towers, each 184 m (604 ft) high. The deck carries six lanes of traffic across the canal.

The bridge is designed to withstand the earthquakes which are frequently recorded in the canal area.

The West Tower of the bridge was built ca. 50m inland to allow space for the future widening of the Panama Canal.

Trivia

A shot of the Bridge was shown in a GMC commercial that aired in the United States in 2006. The commercial was about GMC taking inspiration from great engineering achievements.

See also

* Crossings of the Panama Canal

References

External links

* [http://www.pancanal.com/esp/photo/pte-centenario.html Panama Canal Authority - Photos of the Centennial Bridge]
* [http://www.pancanal.com/eng/photo/camera-java.html Panama Canal Authority - Live webcam at Centennial Bridge]


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