Senbonmatsu Bridge, Road bridge in Taisho district, Osaka, Japan
Senbonmatsu Bridge spans 323.5 meters across the Kizu River with distinctive double-spiral approach ramps on each bank and a main steel box girder structure. The crossing connects Nishinari and Taisho districts through vehicle lanes, pedestrian walkways, and bus routes at a height of 33 meters above water level.
The bridge opened in 1973 to connect industrial areas that previously depended on water transport for cargo movement. Its name comes from pine trees that once lined the riverbanks during the Edo period.
Local residents call this structure Megane Bridge because its distinctive double-spiral shape resembles eyeglasses when viewed from above. This nickname is so common in everyday conversation that the official name is rarely used.
Vehicles and pedestrians should expect tight spiral approach ramps that make three complete turns to reach the main span on each side. Driving or walking at a measured pace is advisable, especially during poor weather or for first-time users.
Navigation systems display an unusual rotating pattern as vehicles traverse the spiral ramps. This phenomenon makes the crossing an interesting navigation experience for drivers using GPS technology.
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