Bridges

[emmagleb]

Hi, does anyone know the minimum height for a bridge over a minor road? I'm guessing it varies with the width of the bridge - is there a chart anywhere? Thanks!

[Buenchico]

There's no rule defining the minimum heights of bridges.

Many rail bridges, for example, were built over minor roads which, at the time, were only intended to be tall enough to allow a man leading a horse to get underneath. Some of the tracks, which went under those bridges, have now become busy roads. For example, there's a road near me, with a constant flow of traffic in both directions, with an 8'3" bridge. Elsewhere in the country, I've seen bridges over busy roads with heights of around 7'.

Chris