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Grade separationThe crossing of two transportation elements one above the other rather than at a surface intersection
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Grade separationVertical isolation of travel ways through use of a structure so that traffic crosses without interference. Spatial separation of two facilities. Intermodial Transfer Point
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Grade separationA transportation facility elevated above or trenched below another facility to separate traffic movements, increasing capacity and safety. May involve one or more transport modes.
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Grade separationA crossing of two highways, or a highway and a railroad, at different levels.
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Grade separationA crossing of two highways, or a highway and a railroad tracks, at different elevations or levels. These separations are created by underpasses and overpasses. A bridge that spans a highway or a railr [..]
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Grade separationPhysical separation of two or more transportation facilities, such as roads, bikeways, and rail lines, at their intersection by constructing them so that one facility passes above or below the other.
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