Overpass

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overpass

[′ō·vər‚pas]
(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.

Overpass

 

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.

References in periodicals archive ?
Former prime minister Nawaz Sharif had also promised to give us an overhead bridge during his last visit of the constituency in 2017 when he addressed a public gathering near the motorway," he said.
When they reached near the overhead bridge, the kite string cut Faheem's neck.
During his period (2000-2005), he constructed dozens of shops, at open space, under overhead bridge and rented the shops to people after having huge money in advance and issued them rental deed from the TMC and set rent of the shops.
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.
SCOTLAND'S busiest road was plunged into chaos yesterday after a flatbed lorry carrying a bin truck hit an overhead bridge.
35pm from the overhead bridge at Sarn, near junction 37.
Typical applications include moving heavy industrial machinery and equipment, tilting and setting presses, installing overhead bridge cranes, and raising and resetting locomotives, boats, and tanks for repair or maintenance.
An underpass or an overhead bridge has now become an urgent requirement at the junction of 7th Avenue and Khyaban-i- Suhrawardy, and subsequent reopening of the latter road.
Chief Minister Shahbaz Sharif will put foundation stone of the overhead bridge in near future.
Request for Proposals: Constructability review & construction management services-fair oaks overhead bridge rehabilitation
Overhead Bridge Cranes from North American Industries are built to customer requirements in sizes up to 100 ton capacity with a 120' span and adhere to CMAA, ANSI, UBC, AISC and OSHA codes and safety requirements.