Talk:East Haddam Swing Bridge

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Main span length[edit]

We seem to have two sources with noticably different data. Are they both talking about the same span? The longer measurement is talking about the swing span, not the stationary one. I don't know what BridgeHunter is talking about. Note that the NBI is not necessarily accurate. We need to find a third, or more, source. - Denimadept (talk) 10:27, 15 October 2015 (UTC)[reply]

The swing span is the approx 456' span, but it is really two spans of ~228' or so because the pier is in the middle. I'm not an expert on what determines a 'main span', but the longer span is actually the stationary thru-truss, which is 326.1 ft center-to-center of the bearings (one of the longest thru-trusses in the state). 23.25.224.97 (talk) —Preceding undated comment added 13:20, 15 October 2015 (UTC)[reply]

Found a source: https://books.google.com/books?id=zv89AQAAMAAJ&pg=RA5-PA27&lpg=RA5-PA27&dq=east+haddam+swing+bridge+%22clear+span%22&source=bl&ots=tP1xyrO3yC&sig=awPUEPyv8hxJ-cucWCVlKgKP2yA&hl=en&sa=X&ved=0CB0Q6AEwAGoVChMI4qHQmMnEyAIVxGs-Ch3azgld#v=onepage&q=east%20haddam%20swing%20bridge%20%22clear%20span%22&f=false Page 43: "...there will be one 461 ft swinging draw span one 327 ft and one 101 ft approach span" 23.25.224.97 (talk) —Preceding undated comment added 13:28, 15 October 2015 (UTC)[reply]

The swing span is usually considered a single span, even when it's a double span swiveling in the middle rather than at one end. - Denimadept (talk) 06:24, 16 October 2015 (UTC)[reply]