What are the exemptions to structural weight limits?

[I52]

Can anyone confirm what the exemptions, other than those signed, are for weight limits. I thought there were some for environmental weight limits, but none for structural weight limits, but maybe wrong. A road I travel has a weak bridge 7.5T MGW limit, I have often followed heavy agricultural vehicles over it, always assumed it was just that some farmers took a relaxed view to regulations, but recently have past full size coaches over this bridge on a couple of occasions. Could not see any exemptions when doing a quick search, could anyone educate me? [url]

[paul_c123]

There are no exemptions unless signed.

Sometimes weight limits are set for environmental reasons, eg a housing estate, rather than structural reasons. But when environmental reasons are set, there is usually an "except for access" added so that delivery lorries etc can access.

[SmoothCriminal]

Same kind of question was answered on here i think.

Maybe worth a look as it has more replies.

https://www.pistonheads.com/gassing/topic.asp?h=0&...

[I52]

Thanks for the replies. So for this case, unless the council have been overly cautious setting the limit, with the amount of overweight vehicles using this road it could well be destined to be out of action in few years.