drawbridges
Movable bridges in which one or more span sections can be pivoted upward by means of chains, cables, or other ropelike devices; if the sections are pivoted by counterweights, use "bascule bridges.".
Movable bridges in which one or more span sections can be pivoted upward by means of chains, cables, or other ropelike devices; if the sections are pivoted by counterweights, use "bascule bridges.".