What Does Span Mean In Terms Of A Bridge?

In terms of a bridge, a span means a horizontal structure made to allow people and vehicles to cross over a hurdle like a canal, a network of railway tracks or a river.  

There are different parts in a span viz;

1. arch — a  curved masonry construction for spanning an opening and holding up the weight above it.
2. trestle- a tower for supporting the bridge
3. pier-a support for two adjoining bridges.

A cantilever span is a bridge made of two cantilevers that merge in the middle.  A footbridge or an overcrossing span is a bridge built for people to walk over.  A steel arch bridge is a span made in the form of an arch. A lift span or lift bridge is a bridge built to block the movement or allow the ships and boats to pass under it.

It means the way someone goes to the bathroom like a bitch