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Public-images-osm logo.svg bridge:structure
The load-bearing structure supporting the span or spans of a bridge. Show/edit corresponding data item.
Group: bridges
Used on these elements
should not be used on nodesmay be used on waysmay be used on areas (and multipolygon relations)may be used on relations
Documented values: 9
Useful combination
See also
Status: approvedPage for proposal

Use bridge:structure=* to describe the load-bearing architecture of individual bridge spans. (A span is the part of a bridge between two of its supports.) Simple bridges may have one span between the abutments on which it rests at each end; others may have multiple spans and many supports. Sometimes a bridge will have more than one type of span in its length. In these cases, the way can be split at the support where the type of span changes and each piece tagged with a different value of bridge:structure=*.


Value Comment Graphics Photo
arch In an arch bridge, the span is supported by a curved arch, which transfers some of its weight into horizontal thrust against the abutments. SC-bridge-structure-arch.svg HarlemRiverBridges.jpg
beam In a beam bridge, the load is transferred entirely to a span resting on a support at either end, without additional reinforcement. SC-bridge-structure-beam.svg Puente Nuevo 03.JPG
truss In a truss bridge, the span consists of a series of interlocking triangular units which bear the load. SC-bridge-structure-truss.svg Eagle River Bridge.jpg
floating A bridge whose load is supported by floating on water, rather than resting on fixed supports. Typically a pontoon bridge. SC-bridge-structure-floating.svg Float bridge.JPG
suspension A bridge where the load is supported from a cable under tension, attached to anchorages at each end of the bridge. In most, but not all, suspension bridges, the cables are suspended between towers near each end of the bridge. SC-bridge-structure-suspension.svg GoldenGateBridge-001.jpg
cable-stayed A bridge where the load is supported by cables radiating from the tops of towers resting on supports along the line of the bridge. SC-bridge-structure-cablestayed.svg Lagos motorway concrete cable stayed bridge IC4 Portugal with nice shaped pylons in concrete - panoramio.jpg
simple-suspension A simple hanging bridge construction, also referred to as swinging or hanging rope bridges. Bridges requiring special skills may be additionally tagged with sac_scale=*, those requiring special equipment with highway=via_ferrata SC-bridge-structure-simple-suspension.svg Soderskar-bridge.jpg
humpback An arch bridge with significant vertical elevation changes of the bridge deck along the arch, also called moon bridges in Asia. SC-bridge-structure-humpback.svg Gaoliang Bridge.JPG
clapper Stone bridge made from horizontal slabs resting on vertical slabs or piers. Clapper-bridge.png Tarr Steps 01.jpg

This table is a wiki template with a default description in English. Editable here.

Multi-architecture bridges

For bridges of a single type, for example an arch bridge it can be useful to add bridge:structure=* on the outline of the entire bridge (man_made=bridge). It is useful especially if single bridge has large number of ways tagged with bridge=yes - multiple footways, carriageways, maybe split as different attributes change. For bridges of multiple types tagging situation is unclear and requires further refining[1]

See also