a bridge or elevated roadway concrete columns supporting the structure a roadway or rail line passing over the structure guardrails or other safety features a unique design, such as an arch a sign or marker indicating the name of the structure
overpass which is a bridge or elevated roadway overpass which has concrete columns supporting the structure overpass which is a roadway or rail line passing over the structure overpass which has guardrails or other safety features overpass which is a unique design, such as an arch overpass which is a sign or marker indicating the name of the structure