Yokohama Bay Bridge

35.454378139.673907Koordinaten: 35 ° 27 ' 15.8 "N, 139 ° 40' 26.1 " E

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Urban motorway Tokyo, Wangan Line

The Yokohama Bay Bridge (Japanese横浜 ベイ ブリッジ, Yokohama In Burijji ) is a double-decker road bridge on the city motorway Tokyo (Metropolitan Expressway Bayshore Route ), which serves, among other things, 17 km north-east lying Haneda Airport.

Description

The entire bridge structure is about 2 km long, including the ramp bridges leading to the northeast to a several times overlapping distribution gyro ( Daikoku Junction ).

On the upper deck of the bridge the urban motorway runs dual carriageway to 3 lanes each, a narrow hard shoulders and a narrow walkway for maintenance workers. On the lower deck there is one lane for here classified as a national road 357 connection for local traffic, which can optionally be expanded to four or six lanes. Light motorcycles, bicycles and pedestrians supply main not cross the bridge.

Immediately adjacent to the northern ramp bridge is the Sky Tower, consists of the upper floors of a connection to the bridge or to the Skywalk, a covered pedestrian bridge, which was externally added to the lower bridge girders. It leads to the Sky Lounge beneath the bridge girder at the first pylon. On the other side of the bridge a similar footbridge leads back to the Sky Tower.

The actual cable-stayed bridge has between the transition structures to the ramp bridges a length of 860 m, taking into account that these transition structures rest on pillars, which have a distance of about 45 meters from one side and 60 m from the other side. The span between the pylons standing on the water is 460 m, the side openings have spans of 200 m. The pylons are 175 meters high H-shaped steel structures. The 40.2 m wide bridge deck consists of a 13.75 m high steel truss; the subsequent ramp bridges have the same construction. The arranged at the outer edge of the bridge deck stay cables are each twice to each other at a close distance and running with vibration dampers. The bridge has a clear height of 55 m. This height was chosen at the time, so as to pass the Queen Elizabeth 2, but is no longer sufficient for many today, much higher cruise ships, which the Port Authority is preparing problems.

Construction of the bridge began in 1980, its opening was held on 27 September 1989. The two lanes on the lower deck were installed in 2004.

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