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(civil engineering)
A grade separation in which traffic at the higher level is raised, and traffic at the lower level moves at approximately its original level.
The upper level at such a grade separation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a bridge built at the intersection of two or more main transportation arteries that allows for the free flow of traffic on different levels. Overpasses are commonly constructed where highways and railroads intersect or over city streets that have both heavy vehicular and passenger traffic.

An overpass can be either rectilinear or curvilinear, dependent on the type of intersection or the configuration of the intersecting city streets. Sometimes overpasses are arranged in several tiers and their spans are located one above the other. Most overpasses are either beam or frame structures because it is necessary to keep the spans low and because of the limited space that is available for piers; arch structures are comparatively rare. Currently, most overpasses are built from precast reinforced concrete. They usually consist of two to four spans, each 10–30 m long. Overpasses with more than four or five spans are called viaducts.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
On the other hand, all the bus stations in Rawalpindi and the IJP Road Station, Pothohar Station, Khyaban-e-Johar, Faiz Ahmed Faiz Station, Kashmir Highway, Chamman and the Ibn-e-Sina Station have overhead bridges since the very inception of the Rawalpindi-Islamabad Metrobus.
The authorities of Rawalpindi and Islamabad should take urgent steps to construct bus stops, overhead bridges or underpasses and install traffic signals.
"Using the overhead bridge cranes to load and service the machines reduces handling time considerably compared to using a conventional lift truck," says Len McNamer, the stores supervisor for the Spring Green facility.
The overhead bridge, currently under paving work, was due to be completed soon, the officials said.
Local Sikh leaders Sardar Jaskaran Singh led the rally which started from Khawaja Safdar overhead bridge Sialkot and concluded at Rangpura.
The overhead bridge at Oyo State Secretariat in Ibadan, the first in the ancient city, and was constructed by the military administration of Brigadier-General David Jemibewon.
ISLAMABAD -- Traders from Bara Kahu in the federal capital have sought the construction of a by-pass and an overhead bridge in the area to help solve the traffic issue there.
The JIT members confiscated the record of the development works carried out in Jamshoro including the overhead bridge at Jamshoro railway crossing and others.
The minister on one hand explained that there were no plans to construct an overhead bridge to facilitate the crossing of students during NDP 11.
VIDEO: Pedestrians near the overhead bridge were terrorised by fire.
According to details, a passenger coach going to Punjab from Karachi collided with a motorcycle here at railway overhead bridge. As a result, two students riding the bike died on the spot.