I'm currently designing a small reinforced concrete bridge on private property. The project is in Scotland.
It's very small scale, a single lane, with a span of around 4.5m. Service life is taken as 120 years.
Using Eurocode design for standard road bridges seems far too over-the-top (there will not be any lorries crossing this bridge for example), so I'm looking for a good load design precedent (with backup documentation). The largest vehicle that may foreseeably cross the bridge would be, say, a 30 tonne concrete mixer.
If there's a good code that relates to, say, loading on temporary works or construction traffic loading then we feel that would be perfect for use on this bridge. Lest we over-engineer the thing and it costs a fortune...