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512 Bridge / tunnel

ISOM 2017-2
512 Bridge or tunnel (ISOM 2017-2)

Geometry: line, point.


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.


Minimum length (of baseline): 0.4 mm (footprint 6 m).

Colour: black.

Correct examples

Incorrect examples