Ads
related to: creating an 8 foot overhang rail bridge
Search results
Results From The WOW.Com Content Network
A tell-tale warning of a low clearance over a road. A tell-tale, also known as a bridge warning, is a series of ropes suspended over railway tracks to give warning to the engineer, and more importantly the brakeman who may be scampering across the tops of the cars, that the train is approaching a low-clearance obstacle, such as a tunnel or a 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 Norfolk Southern–Gregson Street Overpass, also known as the 11-foot-8 Bridge or the Can Opener Bridge, [a] is a railroad bridge in Durham, North Carolina, United States. Built in 1940, the bridge allows passenger and freight trains to cross over South Gregson Street in downtown Durham and also functions as the northbound access to the ...
The completed bridge was 3 metres (9.8 ft) above the highest known flood level. Its six 250-foot (76 m) steel spans were supported on piers and basalt cutwater quoins based on rock . There were four 50-foot (15 m) continuous plate girders on each side and 434 feet (132 m) of timber trestle.
Part of the railway siding followed the route previously used by a horse-drawn tram which had later been converted to a mixed gauge rail system. [1] An 80-foot (24 m) section of railway track to the east of the bridge could be moved sideways by a traverser, [4] making space so that the main 127-foot (39 m) girders could be retracted, creating a ...
New Bedford-Fairhaven Bridge's proposed replacement features matching, 190-foot towers, yet officials fear it poses a "height restriction" problem.