The busiest bridge in the world is the George Washington Bridge. It connects Fort Lee, Bergen County, New Jersey to the Washington Heights neighborhood of Manhattan in New York City. More than 100,000,000 vehicles cross it every year.Know More
The George Washington Bridge was opened for public use in 1931. The bridge also has a lower level, which was opened in 1962. The bridge has a total of 14 lanes, eight lanes on the upper level and six on the lower. This makes the George Washington Bridge the sole 14-lane suspension bridge in the world. The bridge was first named the Hudson River Bridge as it spans the Hudson River.
The main architect and designer of the bridge was Othmar Ammann. The bridge was estimated to cost $75,000,000 when its construction began in 1927. It is formed of exposed steel towers. The initial construction designed included a granite and concrete casing, but that idea was discarded due to higher costs and also the fact that exposed steel had an element of artistic superiority. The bridge has a main span of 3,500 feet, and at the time of its construction, it was the world's longest main bridge span until the Golden Gate Bridge opened in 1937.Learn more about Architecture
Videos on bridge building can be found on a number of websites. Ron Hazelton Home Improvement Online (RonHazenton.com) has a video on how to build a wooden foot bridge. The website lays out detailed instructions in several steps, each accompanied by a separate video. The resulting laminated bridge spans 12 feet, rests on heavy block piers and has side rails and decking.Full Answer >
Beam bridges disperse the weight of traffic and the weight of the beam itself by utilizing strong pillars for supports on each end. Adding additional supports along the length of the beam increases the strength of the bridge. The material used for the beam and for the supports can also be modified, with steel-and-concrete-beam bridges able to handle heavier loads than wooden-beam bridges.Full Answer >
The best design for a pasta bridge is using multiple triangles for stability. Spaghetti has strong axial tension but weak compression, so it is best to make compression lengths as short as possible and add internal web members.Full Answer >
The purpose of the Golden Gate Bridge is to connect San Francisco to Marin County, Calif. Before the bridge opened in 1937, the only practical route between what is now Marin County and San Francisco was by ferry across San Francisco Bay. At the time, San Francisco was the largest U.S. city reached primarily by ferry.Full Answer >