Editing Newport Transporter Bridge (section)

==Principal dimensions==
A Corporation of Newport drawing dated December 1902 is calibrated in metres. The height of the towers is {{Convert|73.6|m|sigfig=4}}, and the height to the underside of the main girder truss above the road level is {{cvt|49.97|m}}. The span between the centres of the towers is {{cvt|196.56|m}}, and the clearance between the towers is quoted as being {{cvt|180.44|m|sigfig=3}}; however, including the cantilevered sections, the main girder truss gives the bridge an overall length of {{cvt|236|m|sigfig=4}}. The distance between the centres of the anchorage caissons is {{cvt|471.06|m|sigfig=5}}. Power to propel the transporter platform or gondola is provided by two {{cvt|35|hp|sigfig=3}} 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 {{cvt|196.56|m}} total travel at a speed of {{convert|3|m/s}}.<ref name=register />

When compared with [[Tees Transporter Bridge|Middlesbrough's Transporter Bridge]], the Newport Transporter is {{cvt|5|m}} taller, but {{cvt|23|m}} less in overall length. It also utilizes approximately {{convert|1400|LT|ST|abbr=off}} of steel compared to {{convert|2600|LT|ST|abbr=on}} used to construct Middlesbrough's Transporter (not accounting for steel used in foundations or concrete anchors).<ref name=register /><ref>{{cite magazine|url=https://www.scientificamerican.com/article/novel-transportation-bridge-in-grea/ |title=Novel Transportation Bridge in Great Britain |magazine=Scientific American |last=Coleman |first=F.&nbsp;C. |date=16 December 1911 |access-date=30 November 2023}}</ref> This difference in weight is mainly due to the Newport bridge making use of cables to support and induce tension into its structure to a far greater extent than the Middlesbrough bridge.

The bridge is a [[Listed building|Grade I listed structure]], its [[Cadw]] listing describing it as "the oldest and largest of the three historic transporter bridges which remain in Britain, and also the largest of eight such bridges which remain worldwide".<ref>{{Cadw|num=3076|desc=Newport Transporter Bridge|grade=I|access-date=3 September 2023}}</ref>