Approx cost of pre-cast basic concrete bridge?

[sandspider]

Hi all

Slightly random, but does anyone have any ideas of costs for pre-cast concrete bridges? Not very big, maybe 1m high by 1.5m span. I've asked for quotes from a couple of places but no one has got back to me. Just a very rough figure would do for now. Anyone had one recently? Or can recommend a supplier / installer in the South West?

Thank you.

[millrace]

Get a concrete shuttering company to cast one on site.

[Modafinale]

What is it bridging ? Can’t you use precast pipes and make a roadway on top

 

Edited February 19, 2021 by Modafinale

[Ultrastu]

Cast your own in situ perhaps  ? 

[Walker570]

Concrete railway ties ??????

[figgy]

I'd use a culvert pipe for that span and then put concrete over if you need heavy loads over it. 

To buy a precast one would be hard as the engineering calcs and how it's fitted all have bearing on its design.  You used to be able to buy them years ago where they sat on pre built engineering brick pillars each side.

Had a quick look and it's either pre cast bridge beams or box culvert sections.

I'd go with concrete railway sleepers as Waljwr570 said cheap and easy to get hold of.

Edited February 19, 2021 by figgy

[sandspider]

Thanks all.

It's to cross a stream. Stone foundations in place, but would need a bit of patching up.

Just trying to figure out if it's cheaper to patch up the existing bridge (which is a bit too small and quite aged now - lime mortarted stone) or replace with something modern, less characterful but stronger and longer lasting.

A big culvert pipe would probably work. I'll have a look at costs. Access isn't great, however.

[djrwood]

Precast concrete box culvert is the answer here

[sandspider]

Yep, that would work. But cost wise it looks like they'd be more than repairing our existing bridge, albeit they'd probably last longer. Hmm.

[bigmcg]

What load are you running over it? What’s the flow rate in the stream? A 900mm twin wall or 2 x 600mm twin wall pipes well back filled will handle a lot of load. Also considerably cheaper and easier to handle if access is poor

[adzyvilla]

There's frequently topics come up on the farming forum about bridges of all shapes and sizes. Might be worth having a look on there. 

[mowdy]

How about using a silage pit concrete panel they can be made in any length up to about 4.8-  5 Mt and are about 1200 wide  

[Fisheruk]

For a span of 1.5 m. Just use precast concrete lintels 200x100mm, easily picked up from a builders merchant and just lay them side by side., get them 1.8m long which will give you 150mm bearing at each end. Precast concrete rectangular section kerb stones laid flat will provide a good padstone bearing at each end.

Edited February 19, 2021 by Fisheruk

[Ricko]

'I' section girder each side with concrete sleepers slotted in to form the roadway?

[oneshot1979]

SWP Bridgewater. 01278 653162.

Great firm that I've worked with before.

 

[tonker]

A couple of rsj's with some sleepers on top job done, and last for years.

[sandspider]

Thanks folks. Will look on TFF too.

Bridge needs to take at least 12 tons weight, mini oil tankers, and feeds 4 or 5 houses, so I'm not willing to self build it. Stream is usually medium flow, but in winter it can really flood and has a lot of power. (This scoured out and cracked the bridge foundations in the flooding last year)

Will try SWP, cheers.