tag:blogger.com,1999:blog-6470543006314152962.post6239218852677309698..comments2024-03-11T16:49:27.614+00:00Comments on The Happy Pontist: Welsh Bridges: 6. Llanilar Suspension BridgeThe Happy Pontisthttp://www.blogger.com/profile/15252272118786667592noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-6470543006314152962.post-50221923539277988802021-06-21T11:26:05.384+01:002021-06-21T11:26:05.384+01:00I went over this for the first time at the weekend...I went over this for the first time at the weekend, and it's a really interesting bridge.<br />By which I mean - bad.<br />It bucks wildly and it seems the bowed wooden planks were taking most of my weight.<br />The towers do indeed look like they've been re-purposed from elsewhere.<br />I'd be very interested to know more about it.Tony Jonesnoreply@blogger.comtag:blogger.com,1999:blog-6470543006314152962.post-32558550567119252122018-08-25T23:09:44.463+01:002018-08-25T23:09:44.463+01:00I am searching for good references on early wire s...I am searching for good references on early wire suspensions bridges in the U.S. Historical documents state that there was a "160 ft wire suspension bridge" across the Esopus Creek at Hurley, NY, but no one has ever seen a drawing or picture of it. It was built in 1856 and replaced in 1888. I am hoping to determine what style of bridge would have most likely been built in that year. I would love to get a drawing or photo of one that was close to the same length as the Hurley bridge and built within a few years of 1856. Thank you in advance for any assistance you can provide!fiddlerhttps://www.blogger.com/profile/11177930912365518898noreply@blogger.comtag:blogger.com,1999:blog-6470543006314152962.post-27398599511011694392018-06-24T10:27:29.788+01:002018-06-24T10:27:29.788+01:00It appears to be close to the old railway station,...It appears to be close to the old railway station, so could have provided access from the north. The "towers" look as though they might be made from bull head rail and something like an old railway axle. It's possible the "pulleys" weren't intended to turn so the ropes could have been held by friction similar to a conventional suspension bridge.<br />Old 6" OS maps online show the footbridge in 1904 but not in 1886 so this may date the original "design".crisbhttps://www.blogger.com/profile/07011361345897768053noreply@blogger.comtag:blogger.com,1999:blog-6470543006314152962.post-38522421775340426182018-06-18T13:40:46.169+01:002018-06-18T13:40:46.169+01:00Is this the Bickleigh one? http://www.geograph.org...Is this the Bickleigh one? http://www.geograph.org.uk/photo/2128752The Happy Pontisthttps://www.blogger.com/profile/15252272118786667592noreply@blogger.comtag:blogger.com,1999:blog-6470543006314152962.post-58878224782528371662018-06-17T22:37:05.332+01:002018-06-17T22:37:05.332+01:00There used to be a bridge with cables supported on...There used to be a bridge with cables supported on pulleys over the Exe about a mile north of Bickley. I haven’t had chance to check it out in 15years or more. There the cables were very flat. So much so that the hangers were just wrought iron bars hooked over the cables. The pulley arrangement recognises some of the issues with cables (like thermal and elastic movement in the back stay but... These backstays come down particularly steeply and generate massive (relative to the masts) horizontal forces at the top. Assume therefore that the secondary back stays to resist that are either part of the original design or fitted very shortly after when the masts bent unnervingly.<br /><br />I saw a cable stayed bridge with timber deck in New Zealand which had, I think, seven complete cables from tower to tower each pulled down to a cross beam at a different point in the span. So no net horizontal force in the deck but some pretty tricky assembly.<br /><br />The optimistic tack welded threadbar is a bit alarming. Great fun though. Well done for finding it. Must now check bridgemeister’s catalogues for the one on the Exe.Bill Harveyhttp://www.billharveyassociates.comnoreply@blogger.com