Ballast influence and effects of high-speed train passage on a concrete underpass structure are analysed.
Built in four phases, when completed in 2013, this project totaled 60 crossing structures (39 underpasses, six overpasses, and the rest culverts).
This methodology could be used to take into account local soil discontinuities, underground constructions such as underpasses, and coupling with nearby structures that break the uniformity of the geometry along the track line.
We investigated these issues for wide-ranging large carnivores and their prey species in Banff National Park, Alberta, using data obtained from systematic, year-round monitoring of 13 newly constructed crossing structures for wildlife (underpasses and overpasses) for 34 months post-construction.
Mr. Boberg is a painter as well, and in his superbly realistic models of nondescript familiar structures -- apartment buildings, roads, underpasses, stairways, walls and canals -- he gives his illusions of the banal a surprisingly elegiac veneer.
Road-crossing structures such as wildlife bridges or underpasses are a good way to help animals cross roads safely.
Just north of the underpass, a sign stating 'End of Construction' was erected facing southbound traffic.
He discovered that grizzly bears preferred overpasses; cougars preferred underpasses; and wolves and moose preferred larger, more open structures.
Furthermore, bat passes were also recorded for the more collision-prone flight route at crossing structures (2% and 6.4% recorded above motorway level at river bridges and underpasses respectively, and 50% recorded on the underside of overbridges).
Head through the underpass.
