Extracting over a weak bridge

[Johnpl315]

Hi guys, 

 I potentially have some very small scale forestry work coming up and there will be around 50 tons of timber to come out down a byway over a weak bridge. 

 I will be extracting with a small alpine tractor and trailer which will has a maximum mass when loaded of 5 tons. 

 Personally I believe the bridge will be fine because it's a short span, the full weight will never be on the bridge and horses etc use it all the time. 

 The client is a little concerned about damaging it however because if it collapsed it could block the stream which could then flood a neighbouring property. They have suggested I could put down some kind of support over the bridge, such as the kind used to temporarily cover manholes during roadworks. 

 I have done some googling but I can't quite find what I am looking for. 

 I am of the opinion that a few scaffold boards doubled up would do the job and be more cost effective. 

 Does anyone else have any ideas? 

Thanks

[Khriss]

Pics would be good, i have image in my head of North West Frontier film 😉 K

[Stubby]

Pit props under it .

[Justme]

How big is the span?

[woody paul]

Has it got an official weight limit on it or just land owners. 

[aspenarb]

Is there room to throw a few sleepers down next to the bridge and make a temporary crossing?

We did this to get a dumper across a stream.

 

 

 

[Stubby]

Just now, aspenarb said:

Is there room to throw a few sleepers down next to the bridge and make a temporary crossing?

We did this to get a dumper across a stream.

 

 

 

Seems to hold a Jack Russel ok ! 👍

[Will C]

How deep is the drop? Can you drop a few trunks in to drive over and remove them at the end? If you use big stuff the water should still flow in a small ish stream. 

[Craig.]

I`ve seen pre stressed concrete panels, like you use for silage pit/shed walls used length ways over the top of a weak bridge, to get timber trucks across.

[monkeybusiness]

5 hours ago, Stubby said:

Pit props under it .

This surely? Hire a few acrows and go for it!