Tag:tunnel=culvert

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Public-images-osm logo.svg tunnel = culvert
Grate on the culvert - geograph.org.uk - 1634830.jpg
Description
For a stream/drain/ditch passing under a road. Use it on the section of waterway passing under the road. Show/edit corresponding data item.
Rendering in OSM Carto
Rendering-waterway river tunnel.png
Group: waterways
Used on these elements
should not be used on nodesmay be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination
Status: de facto

A culvert is a device used to channel water. It may be used to allow water to pass underneath a road, railway, or embankment for example. Culverts can be made of many different materials; steel, polyvinyl chloride (PVC) and concrete are the most common. Formerly, construction of stone culverts was common.

Typical culvert is a pipe buried under the road. Very large culverts may be hard to distinguish from bridges. Culverts commonly carry waterway=stream, waterway=drain, and waterway=ditch, but there are also large culverts carrying waterway=river.

tunnel=flooded may be used to map larger and longer tunnels used to channelise any fluid.

How to map

Tag the section of covered waterway, including layer=* as usual for tunnels.

Common values are culvert=pipe if the culvert is made of a single pipe or individual pipe sections and culvert=box if the culvert is rectangular shaped.

culvert=inverted_siphon may be added for sections of a waterway diving under another waterway.

See tunnel=* for a description of the preferred way of connecting culvert waterways to adjoining waterway sections.

Values

Additionally, the following values are in use with waterways:

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Possible tagging mistakes

If you know places with this tag, verify if it could be tagged with another tag.
Automated edits are strongly discouraged unless you really know what you are doing!
If you know places with this tag, verify if it could be tagged with another tag.
Automated edits are strongly discouraged unless you really know what you are doing!
If you know places with this tag, verify if it could be tagged with another tag.
Automated edits are strongly discouraged unless you really know what you are doing!

See also