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Official figures for a bridge's height are often provided only for the clearance below, so those figures may be used instead of actual deck height measurements. For bridges that span tidal water, the clearance below is measured at the average high water level. The minimum height for inclusion in this list is 130 ft (40 m), which may be either ...
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.
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 bridge is named for 16th century Spanish explorer Hernando de Soto, who explored this stretch of the Mississippi River and died south of Memphis. [8] Hernando de Soto Bridge illuminated at night in 2015. At night, the bridge was illuminated by 200 sodium vapor lights along its "M" structure. The bridge was first illuminated on September 5 ...
The Crescent City Connection was the fifth most traveled toll bridge in the United States in 2006, with annual traffic exceeding 63 million vehicles. [10] The bridge is the centerpiece of the Crescent Connection Road Race (CCRR) [11] or Bridge Race as it is locally known, an annual event held on the first Saturday in September following Labor ...
Memphis & Arkansas Bridge: I-55, Mississippi River Trail, US 61 / US 64 / US 70 / US 79: 1949 4] Mississippi – Arkansas. Helena Bridge ...
As originally constructed, each roadway deck was 18 feet (5.5 m) wide, with two 9-foot (2.7 m) lanes; but because of the railroad component, it is unusually flat. Normally, bridges its height have a hump, but this bridge was designed flat to facilitate rail traffic. [10] The bridge is a favorite railfan location.
The Interstate 74 Bridge, officially known as the Iowa-Illinois Memorial Bridge, and often called The Twin Bridges, or the I-74 Bridge, are basket-handle, through arch twin bridges that carry Interstate 74 across the Mississippi River and connect Bettendorf, Iowa, and Moline, Illinois. It is located near the geographic center of the Quad Cities ...