A Corporation of Newport drawing dated December 1902 is calibrated in metres. The height of the towers is , and the height to the underside of the main girder truss above the road level is . The span between the centres of the towers is , and the clearance between the towers is quoted as being ; however, including the cantilevered sections, the main girder truss gives the bridge an overall length of . The distance between the centres of the anchorage caissons is . Power to propel the transporter platform or gondola is provided by two electric motors, which in turn drive a large winch, situated in an elevated winding house at the eastern end of the bridge. This winch is sufficient to drive the gondola through its total travel at a speed of .