The total length of the bridge, the bridge with abutment refers to the distance between the ends of the side walls or splayed walls on both sides of the bridge. The bridge without abutment is the length of the carriageway of the bridge deck system, and the width of the bridge is the width of the carriageway plus the sidewalk or the width of the safety belt plus the bridge guardrail and calculated to the outer edge.
Area: the size of an object surface or a closed graphic surface.