512 Bridge/tunnel
Geometry : line, point.
Definition
Bridges and tunnels are represented using the same basic symbols.
If it is not possible to get through a tunnel (or under a bridge), it shall be omitted.
Minimum length (of baseline): 0.4 mm (footprint 6 m).
Small bridges connected to a track/path are shown by centring a track
dash on the crossing. Tracks/paths are broken for water course
crossings without bridges. A small footbridge with no path leading to
it is represented with a single dash.
Parameters
Colour: black 60%.