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Available languages — Tag:tunnel=culvert
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Public-images-osm logo.svg tunnel = culvert
For a stream passing under a road. Use it on the section of stream passing under the road.
Group: Waterway
Used on these elements
may be used on nodesmay be used on waysshould not be used on areasuse on relations unspecified
Useful combination
Status: In use

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.

In some countries, the culvert structure is directly reused as a bridge in which case prefer the tag bridge=culvert. This tag does not apply for open-top culverts.

How to Map

Apply to the section of covered waterway. Use the tag layer=* as usual for tunnels.

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

Deprecated syntax

The culvert=yes syntax is deprecated (since 2010) due to ambiguity.[1] Please use tunnel=culvert instead. (While technically sound there is no use of culvert=no as of April, 2015, so avoid it altogether.)

See also


  1. See the seemingly endless debate over the mailing list