possible the cost-effective construction of high-quality bridges over a
range of conditions and span lengths including highway alignment.
structures constructed using post-tensioning have high intrinsic
are able to be built quickly with minimal impact on the human and
environment. Further, structures constructed using post-tensioning also
from the method's ability to limit cracking, reduced structural depth,
accommodating curved roadway alignment and low maintenance costs. And,
benefits do not come at the expense of aesthetic expression.
construction has become the preferred method of building long-span
bridges as well as concrete arches with the help of temporary towers
It is a proven cost-effective means of building spans ranging from
m) to more than 1,000-feet (300 m). It has been used to cross major
water, deep mountain canyons, and densely populated urban areas.
can be used effectively to build bridges on alignments that are curved
which can be built quickly and without touching the land or water below
bridge, are a relatively low impact structural system and optimal
longer spans (commonly up to 300-feet or more), shallower girder
continuously curved superstructures, post-tensioning offers ductility
seismic performance as well as superior aesthetics to today's precast
also provides more flexibility in the layout of span lengths, bent
configurations and roadway geometrics than precast I-girders or
concrete box girders.