Motor home stuck under Flintshire bridge

  • Thread starter Thread starter Bayblue
  • Start date Start date
hextal said:
Theoretically, it's certainly possible, but not something I've ever seen done. I suspect the bigger issue, above the increased surcharge from the new foundation, and localised settlement, would be the increased lateral earth pressure behind the abutments. The taller they are, the more horizontal load the are subjected to. Now the deck will, rightly or wrongly, act as a horizontal prop, but the centre of gravity of the horizontal load is 1/3 from the bottom of the abutment. So, they will potentially try to rotate. This too can be countered by casting a trough beneath the road to effectively brace the bottom of the abutments against each other.

The reality is that unless there is a burning need, or an easy win, they tend to just get managed.

A fall back is installation of collision protection beams up and down stream of the bridge. They are a structural portal set lower than the bridge and not flexible. So they are sacrificed rather than the edge of the bridge.
Click to expand...

I can think of a couple of bridges that could do with a solution.

As usual I suppose it is all down to cost.
 
This could be the new prototype for the height barrier at Huttoft car terrace.

On a serious note i like the advanced warning structures on the approach to this type of bridge, they have a girder framework higher than the bridge but from the top girder chains are hung to a height. Six inches or so lower that the bridge so that if you are over-height the chains brush the top of the vehicle providing some advanced warning of the impending disaster.
Dave
 
dr dave said:
This could be the new prototype for the height barrier at Huttoft car terrace.

On a serious note i like the advanced warning structures on the approach to this type of bridge, they have a girder framework higher than the bridge but from the top girder chains are hung to a height. Six inches or so lower that the bridge so that if you are over-height the chains brush the top of the vehicle providing some advanced warning of the impending disaster.
Dave
Click to expand...

As in Blackwall Tunnel.
 
Robmac said:
I can think of a couple of bridges that could do with a solution.

As usual I suppose it is all down to cost.
Click to expand...

Absolutely.

I have circa 900 bridges/tunnels that I'm currently managing across southern England and an annual budget that would cover maybe 2 of the above described options whilst leaving zero funds for anything else.

So it tends to be minor maintenance schemes rather than large scale works.

Essentially, the government love ploughing money into blingy new schemes as they can pin their names to it and the public see that something has been built for the money. Maintenance is very much the poor cousin, it's dull, it's not good for getting Ministers noticed, and if done right, the public won't even be aware that anything has been done at all. So, it doesn't attract much money.

It's also something of a circular argument because statements along the lines "look at the state of our ageing infrastructure - we need a brand new road/railway/etc" can then be used.
 
I think they were erring on the side of caution whith the bridge height sign.

Also in the newspaper article comments I don't think Dr. Collins is aware fully aware of what happened :confused:
 
Even the Swiss

Not actually stuck, but you can see where they have been !

IMG_9058.jpgIMG_9059.jpg
 
Aw bless, it's just like the Sundance I had. I always worried that it was too tall for it's own good.
 
n brown said:
a proper camper would let a bit of air out of his tyres, pull the thing out of there, and drive onto the rest of his holiday
Click to expand...

Was thinking the same thing, would that work if the aerial and other roof things were removed?
 
carol said:
Nooooooooooooooo! Was expecting it. I ignored Tezz33's vague reference in case it was me being sensitive 😄😄😄😄
Click to expand...

Aww Carol !!! Anyway I don't know what happened to you and your MH so if you could enlighten me I won't keep bringing it up!!! :confused::lol-061:
 
Lytham Road, Fulwood, Preston Lytham Road.jpg


This one gets hit regular despite having electronic warning signs and a snazzy paint job.

It`s on a short cut to the hospital and not that far from it so it`s quick to take the injured to :rolleyes2:
 
jeanette said:
Aww Carol !!! Anyway I don't know what happened to you and your MH so if you could enlighten me I won't keep bringing it up!!! :confused::lol-061:
Click to expand...

I can't bring myself to say it, Jeanette but it involves Rouen, underpass and high top t4 🙁
 
2.2m!!!!!!

Auld Pharrrt said:
Personally I believe a lot of the times it comes from not knowing what 2.2m = in old money.
Click to expand...

In old, or new money, 2.2m =======2.2m!!

I did my apprenticeship in 1968 to 1971, even then all metric!

So, even in 1968, 2.2m was, actually, 2,2m!

Do you still calculate your banking, savings, euro thingies etc in Pounds and Pence?
 
carol said:
Nooooooooooooooo! Was expecting it. I ignored Tezz33's vague reference in case it was me being sensitive 😄😄😄😄
Click to expand...

I said
me said:
Obviously I cannot say certain things, one of my favourite members/people delivers low bridges
Click to expand...
I should change that to just 'Obviously I cannot say certain things, one of our members delivers low bridges'


my favourite list gets shorter
 
You must log in or register to reply here.

Users who viewed this discussion (Total:0)

Back
Top