Same general area on the bridge, slightly over a quarter-mile from the Marysville side...
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| The 1977 Rockville Bridge Wreck https://www.rypn.org/forums/viewtopic.php?f=1&t=45218 |
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| Author: | NVPete [ Mon Jan 25, 2021 11:56 am ] |
| Post subject: | The 1977 Rockville Bridge Wreck |
Now this ought to give you guys something to discuss besides politics. LOL Do you think this particular incident had anything to do with a big hunk of the bridge falling into the river about twenty years later?... https://www.pennlive.com/life/2019/10/d ... ridge.html |
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| Author: | Alexander D. Mitchell IV [ Mon Jan 25, 2021 3:20 pm ] |
| Post subject: | Re: The 1977 Rockville Bridge Wreck |
No. The subsequent investigations blamed the August 1997 collapse on water build-up behind the spandrel walls due to improperly maintained drainage. See https://stonearchbridges.com/2019/11/15 ... rel-walls/ for more information on the syndrome. |
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| Author: | NVPete [ Mon Jan 25, 2021 11:51 pm ] |
| Post subject: | Re: The 1977 Rockville Bridge Wreck |
Poor drainage does tend to aggravate retaining wall splay, Alexander. That's zero votes yes, one vote no. |
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| Author: | NVPete [ Tue Jan 26, 2021 8:40 pm ] |
| Post subject: | Re: The 1977 Rockville Bridge Wreck |
Here's another article which follows Alexander's train of thought but offers additional information as well... https://news.psu.edu/story/140850/1998/ ... ng-bridges |
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| Author: | NVPete [ Sat Jan 30, 2021 1:55 pm ] | |||
| Post subject: | Re: The 1977 Rockville Bridge Wreck | |||
Same general area on the bridge, slightly over a quarter-mile from the Marysville side...
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