Talk:Timeline of three longest spans

Editing problems
Often the timeline does not display. Instead the familiar rectangle with a red cross is shown, indicating a picture that is not shown. To fix this a dummy edit can be done like changing a colour or another colour or adding shift:(0,0) or adding or removing spaces etc etc.

I dont know how to fix this very annoying behaviour permanently. I'm using Internet Explorer 7.0. Najro (talk) 17:36, 13 March 2008 (UTC)

Link problems
The links of the graphical timelines do not work with Internet Explorer 6.0 but work with 7.0. Najro (talk) 16:26, 23 January 2008 (UTC)

Sognefjord Span is also world's third longest !
There are 2 powerline spans at Sognefjord, one 4850 metres long, the other 4520 metres long, see http://www015.upp.so-net.ne.jp/overhead-TML/norway.htm and Sognefjord Span. Please correct! —Preceding unsigned comment added by 91.46.208.41 (talk) 21:40, 23 April 2009 (UTC)

I am not sure, but I believe that one Sognefjord Span was built in the 1950ies and the other in the 1970ies. Check either old Guinness-Books or contakt http://www.stattnet.no, the power grid operator of Norway. The Omega transmitter in Bratland was in service until 1997. There is a second system used for transmitting on 16.4 kHz ( callsign JXN). —Preceding unsigned comment added by 91.46.208.41 (talk) 21:46, 23 April 2009 (UTC)


 * Ok, but to begin with, lets guess the longest Sognefjord was build 1975. Omega was still a span in 2002 according to Wikipedia. Najro (talk) 19:06, 3 July 2009 (UTC)

List needs to be updated (template)
The listing is very incomplete, many larger spans are missing: See List of Roman domes, List of the world's largest domes and List of ancient roofs. Gun Powder Ma (talk) 13:37, 13 May 2009 (UTC)

Trezzo sull'Adda Bridge
That article claims it has four sources supporting its claim that "Completed in 1377, the single arch bridge held the record for the largest span for over four hundred years, until the beginnings of the Industrial Age, . . ." and one source further claiming that ". . . while it was not until the early 20th century that masonry bridges with larger openings were constructed." Apparently that source also claims that "Longer masonry arch spans were not achieved until the 1903 Adolphe Bridge in Luxemburg." Then it has a fifth source that claims "The Trezzo Bridge was not matched until the metal Wearmouth Bridge of the same span was built at Sunderland, England, in 1796." Why isn't this bridge mentioned?--189.33.14.179 (talk) 02:08, 15 November 2009 (UTC)

San Francisco–Oakland Bay Bridge
Constructed in 1936 and having two main spans of 704 metres each, San Francisco–Oakland Bay Bridge should also appear on the list. Delta 51 (talk) 17:49, 13 November 2017 (UTC)