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Download as PDF; Printable version; In other projects Appearance. move to sidebar hide. ... Clearance (civil engineering)#Vertical clearance; Retrieved from "https: ...
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.
Prior to the study conducted by the USCG and the NYSDOT, options to ameliorate the issue included a new rail tunnel under the Hudson River, the rehabilitation of the Poughkeepsie Bridge, the use of the North River Tunnels, a cross-harbor rail ferry, the use of low-profile piggyback equipment and the use of the Harlem, New Haven, and Hudson Divisions through the removal of clearance restrictions.
Each tube provides a 21.5-foot-wide (6.6 m) roadway with two lanes and 13 feet (4.0 m) of vertical clearance. [2] Most vehicles carrying hazmats are not allowed in the tunnel, and trucks cannot use the center tube. There is a width limit of 8 feet 6 inches (2.59 m) for vehicles entering the tunnel. [3]
Vertical clearance: The minimum vertical clearance under overhead structures, such as bridges, is 16 feet (4.9 m), including both paved shoulders and an allowance for extra layers of pavement. 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).
NYS DOT has several Traffic Management Centers (TMC) located throughout the 11 regions in New York State. Region 1 (Capital Region): The Region 1 TMC or CRTMC (Capital Region Traffic Management Center) is an attachment of the New York State Police Communications Section also known as SP COMSEC, formally located at the State Police Division Headquarters, building 22 on the W. Averell Harriman ...
The code also defines the clearance that is shorter than the physical clearance to account for sag curves, bridge deflection and expected settlements with a recommendation of minimum clearance of 5 metres (16 ft 5 in). [2] In UK, the "standard minimum clearance" for structures over public highways is 16 feet 6 inches (5.03 m). [3]
Alexander Hamilton Bridge in May 2024. The total length of the bridge, including approaches, is 2,375 feet (724 m). Its parallel main spans are 555 feet (169 m) long and provide 103 feet (31 m) of vertical clearance over the Harlem River at the center and 366 feet (112 m) of horizontal clearance.