Talk:List of longest cantilever bridge spans

Story Bridge
The Story Bridge, Brisbane, Australia, with a span of 282 metres (meters) should be 11th in this list

Story bridge: http://en.wikipedia.org/wiki/Story_Bridge%2C_Brisbane

Image of Story Bridge: http://en.wikipedia.org/wiki/Image:StoryBridge.jpg


 * I've added the Story Bridge to the list.

GA fail
I'm quick failing this GA nomination - per WP:WIAGA, lists are not reviewed under the GA system, and should instead be nominated for WP:FL status. Frickative 23:31, 4 October 2007 (UTC)

rank links
The main reason for rank linking (even not to official links and only to wikiarticles) was easy editing, with adding bridge somewhere inside list, rank was recalculated automaticly. With fixed ranking numbers, you must recalculate ranking manually and that is big waste of time (and kind of editor hell). So i am for revert to rank linking (and some edit of list note accordingly). --Jklamo 03:37, 9 October 2007 (UTC)

Cornwall Bridge, Montreal
I live in Montreal, and I've never heard of a bridge by that name in that city. Can anyone tell me where that comes from? Would such a bridge span the Lachine Canal? --Blanchardb- Me • MyEars • MyMouth -timed 13:04, 29 December 2007 (UTC)
 * There is an error in location, but not in existece of bridge. Seems that bridge was located in Cornwall, Ontario. Bridge is noted here New York and Ottawa Railway, here is a postcard. --Jklamo (talk) 14:05, 28 January 2008 (UTC)
 * Got it. I think I know the exact location of that bridge. I might drive over there to take a picture of it pretty soon. --Blanchardb- Me • MyEars • MyMouth -timed 21:41, 28 January 2008 (UTC)

Should continuous truss bridges and continuous arch-truss bridges be in this list?
Jklamo recently added several continuous truss bridges to this list implying that the list should contain bridges built with a cantilever construction method. I disagreed with this and removed the additions until it can be discussed.

There seems to be some confusion about what makes a "cantilever bridge." Figure 21 on page 541 of this book gives a great diagram of what makes a "cantilever bridge." This same book gives a discussion (and picture in figure 22) about using cantilevers during construction and then "releasing the bridge" to act in a different manner when in use.

A cantilever bridge will have distinct truss (or girder) sections that are each statically determinate. This can be seen in the figure in the above book as two cantilever spans and one "suspended span." Traditionally, the steel along the dotted lines is still installed, mainly to provide sway or wind bracing for the main span, not for primary load capacity. The "discontinuity" in the main span was very important in the construction of early cantilever bridges. Engineers did not have enough knowledge (or computational power) to understand how the load in a continuous truss would distributed.

The image to the right gives a good example of the idea of a continuous girder. You can read the article Statically indeterminate to learn a little about why it is more complicated to calculate the forces in a statically indeterminate system like a continuous-truss or continuous-girder bridge.

Because there are enough differences between cantilever bridges and continuous (truss or girder) bridges in the design process, I propose that these bridges be on separate lists. - PennySpender1983 (talk) 00:15, 14 July 2008 (UTC)


 * Or, at least with an asterisk or other note that these are not the traditional "pure" cantilevers, even if there is an "aspect of overhang".--Piledhigheranddeeper (talk) 18:19, 4 March 2009 (UTC)


 * So we should take everything from List of longest continuous truss bridge spans and List of the largest arch bridges and put them in this list with an asterisk? Should we delete those lists? - ¢Spender1983 (talk) 01:44, 5 March 2009 (UTC)

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Rendsburg High Bridge
This one's missing: http://en.wikipedia.org/wiki/Rendsburg_High_Bridge Total length: 	2,486 metres (8,156 ft) Height: 	68 metres (223 ft) Longest span: 	317 metres (1,040 ft) —Preceding unsigned comment added by 77.6.47.197 (talk) 19:43, 5 March 2011 (UTC)

Rank
Presumably because of later additions, the "Rank" column no longer works properly. Some rows have a rank of "x", which is not explained. Of course, one could just renumber it accordance with the current contents of the table, but if, as the note says, the table may be complete, then does this even make sense? If I see "Rank = n" against an entry, then I assume that this bridge is the world's nth longest. If actually it may not be then is this not misleading? Would it be better to delete the "Rank" column altogether? 86.128.1.157 (talk) 00:15, 6 August 2014 (UTC)
 * Feel free to correct ranking. "x" mean just simply "i was lazy to fix ranking" (and there is not yet automatic way to do it). Delete ranking column sound like to radical solution for that form me. --Jklamo (talk) 12:00, 6 August 2014 (UTC)
 * Don't you agree that the ranking, even if corrected, is misleading if the table is believed to be incomplete? 86.160.87.26 (talk) 12:33, 6 August 2014 (UTC)

Bridge of the Americas
In this list, the Bridge of the Americas is shown with a span of 344 m, but according to the article Bridge of the Americas, this length relates to the main (central) span, which surely is not a cantilever design? I think this entry is confusing, and quite possibly wrong, but not being an expert I am reluctant to try to change it myself. 86.160.87.26 (talk) 13:45, 6 August 2014 (UTC)

Separate Existing Bridges And Demolished Bridges
Should the list of cantilever bridges be separated from bridges that no longer exist with bridges that exist? Several on the list were demolished a long time ago, and others are unfortunately about to be demolished. Also, Is there any list of preserved Historic Cantilever Bridges article? In Correct (talk) 21:08, 12 March 2017 (UTC)

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