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Through urban areas, at least one routing is to have 16-foot (4.9 m) clearances, but others may have a lesser clearance of 14 feet (4.3 m). Sign supports and pedestrian overpasses must be at least 17 feet (5.2 m) above the road, except on urban routes with lesser clearance, where they should be at least 1 foot (30 cm) higher than other objects.
The clearance below required under bridges for the largest ships—container ships, ocean liners and cruise ships—is around 220 feet (67 m) so there are often bridges with approximately that height located in coastal cities with bays or inlets, such as New York City's Verrazzano-Narrows Bridge and San Francisco's Golden Gate Bridge.
In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a lock or diameter of a tunnel in the case of watercraft.
The one-lane bridge carries Robert Parker Coffin Road over Buffalo Creek in Long Grove, a village located 30 miles (48 km) northwest of Chicago, Illinois. [2]: 4 It connects the Long Grove Community Church to the southwest with downtown Long Grove, formed at the road's intersection with Old McHenry Road, to the northeast.
The 1877 bridge and its counterparts, while the most common bridge of the mid-19th century, were criticized by both the shipping and real estate industries of Chicago. As the 19th century came to a close, shipping vessels had grown larger, and the swing bridges' center piers had become navigational hazards.
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Chicago River: Locale: Chicago, Cook County, Illinois: Official name: Irv Kupcinet Bridge: Other name(s) Wabash Avenue Bridge: Maintained by: Chicago Department of Transportation: ID number: 000016605226647: Characteristics; Design: Double-leaf bascule bridge: Total length: 345 feet (105 m) Width: 90 feet (27 m) Longest span: 232 feet (71 m) No ...
State Street Bridge (Chicago) T. Taylor Street Bridge (Chicago) V. Van Buren Street Bridge (Chicago) W. Wabash Avenue Bridge; Washington Boulevard Bridge;