Railroad Bridge

Railroad Bridge

 

a structure that carries a railroad line across some obstacle (such as a watercourse or ravine). Rail-road bridges are subjected to intensive dynamic effects: great demands are made on their strength, durability, and stability in order to ensure safe and uninterrupted railroad traffic and provide for long-range increases in railroad traffic. Continuous truss bridges are usually used to cross the navigable channels of large rivers. For nonnavigable streams and small rivers, steel beams or spanning beams made of prestressed reinforced concrete are used.

Steel spans made up of welded elements and sections held together by highly resistant friction bolts are widespread in modern railroad bridges, as are continuous steel beams that function as a unit with the reinforced-concrete slab underlying the roadbed. Arch-type reinforced-concrete railroad bridges are less common. Wooden railroad bridges, which are less durable, may be used only on railroads of the third category.

REFERENCE

Evgrafov, G. K., and N. N. Bogdanov. Proektirovanie mostov. Moscow, 1966.

N. N. BOGDANOV

References in classic literature ?
They came to a narrow railroad bridge and presently to a mono-rail train standing in the track on its safety feet.
A man stood upon a railroad bridge in northern Alabama, looking down into the swift water twenty feet below.
The project includes replacing the Norfolk Southern railroad bridge over U.S.
INDIANAPOLIS -- Authorities released video Monday of a man suspected of killing two Indiana teenagers two years ago and urged the public to scrutinize the footage, which shows the man walking on an abandoned railroad bridge the girls visited while out hiking the day they were slain.
Three young tourists who sneaked up onto a railroad bridge in Yuli Township, Hualien County last year have been lambasted by social media users for their folly, Central News Agency (CNA) reported on Sunday.
Summary: New Delhi [India], Dec 5 (ANI): Prime Minister Narendra Modi will inaugurate India's longest railroad bridge on December 25.
OKLAHOMA CITY The Interstate 235 project in Oklahoma City will close the highway for a fourth full weekend April 6-9 to remove the old BNSF railroad bridge from over the interstate.
of Spokane, Washington Amount: $5,549,000 Project: Burlington Northern Railroad Bridge, Bonner County, Idaho Owner: Idaho Department of Transportation Cost estimate: $4,000,000 $,000,000 Project team: not available 4.
"One body was left hanging from a railroad bridge."
The new six-lane roadway underpass and double-decker railroad bridge will eliminate these sizeable traffic delays, along with the potential for collisions at the highway-rail grade crossing.
The Railroad Bridge Company, played a key role in the economic development of the country.
DEC 31 Michigan's only international railroad bridge, built across the St.