Bridges – Transportable
Patent
1989-09-11
1990-09-04
Massie, Jerome W.
Bridges
Transportable
14 1, 14 17, 14 73, 14 74, 404 1, 404 71, E01D 1500
Patent
active
049532499
ABSTRACT:
A modular overpass that uses interlockable roadway units. These interlockable units include ramp units adapted for fitting together to create entry and exit ramps having a low end and a raised end, cantilever units for attachment to the raised ends of the ramps, and suspended span units for joining the cantilever units. Flexible footings are provided to support the roadway units. The flexible footings comprise a resilient base, a covering cap sealably fitted over the base to define a cavity, and a packable bearing material partially filling the cavity. A system of pilings are used to anchor the roadway units in position. The system can be used to create an overpass over intersections between highways and secondary roads so that highway traffic travels over the overpass and local secondary road traffic is controlled by traffic lights. The modular overpass is shaped to conform to the existing highway surface and is supported on that surface by the flexible footings. A raised parking lot structure can also be constructed using the flexible footings of the present invention and a modified form of interlockable units that form an essentially level parking surface.
REFERENCES:
patent: 2225186 (1940-12-01), Sorensen
patent: 3662656 (1972-05-01), Finsterwalder et al.
patent: 4181995 (1980-01-01), Zur
patent: 4592673 (1985-03-01), Lee
Massie Jerome W.
Schoeppel Roger J.
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