GRE Reading Comprehension
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Source: Kaplan
A box girder bridge, an evolution of the plate girder bridge, is fabricated from either poststressed concrete or sheet steel plate, and commonly built for roadway flyovers and light rail transport. Some modern steel trestles, for example, are composed of a number of girder bridge segments. If of concrete, girder bridges may be cast in place, using falsework supports removed after completion, or may be prefabricated (as the steel-plate type usually is) in a fabrication yard, then transported and placed using cranes. The latter method is often used in situations where access for construction is limited to times of light traffic, which may be detoured around the work area, utilizing a limited number of lanes.
The passage suggests that its author would agree with which of the following statements about bridge design and construction?
- A The amount and flow of traffic influences the construction method of box girder bridges.
- B Bridge-building materials and methods have evolved with traffic and mass transit needs.
- C Steel girder bridges may also be cast in place using falsework supports removed after completion.