Editing Bridge

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{{Infobox main|structure
| name = Bridge
| image = Bridge.png
| description = A flat wooden surface on supportive beams which can be built over water. You can build light structures on bridges, but be careful - bridges are fragile. If a bridge falls, buildings on top of it fall as well.
<!-- Base Stats -->
| type = Building
| type2 = Structure
| hp = 100
| beauty = 0
| flammability = 0.8
<!-- Building -->
| size = 1 ˣ 1
| placeable = True
| terrain affordance = Bridgeable
| cleaning time factor = 1
| filth multiplier = 1
| speed = 1
<!-- Creation -->
| work to make = 1500
| resource 1 = Wood
| resource 1 amount = 12
<!-- Technical -->
| tags = Floor
<!-- Wiki -->
| page verified for version = 1.3.3200
}}
'''Bridges''' are [[structures]] that can be built on [[Terrain|water]], and allow light buildings on top of them. 

== Acquisition ==
{{Acquisition}} They can only be constructed on the following terrain types:
* [[Marshy soil]]
* [[Mud]]
* [[Marsh]]
* [[Shallow water]]
* [[Shallow ocean water]]
* [[Shallow moving water]]
* [[Chest-deep moving water]]

In addition, if the map tile contains both a road and river, then bridges will spawn on the river.

== Summary ==
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While structures, bridges act similar to a [[floor]] tile. Unlike the water its on, bridges don't penalize movement, making travel faster. They can also support structures that require a terrain affordance of "light", such as wooden [[walls]] and buildings, but not structures that require medium or heavy terrain affordance, like any other type of wall. The terrain types that allow bridges do not allow floors, so bridges are the only way (short of a moisture pump) to improve the movement speed, [[cleanliness]] and [[beauty]] of such tiles, or enable them to count as "floored" for the bedroom and throne room needs of a pawn with a noble [[title]].

Bridges can be damaged or destroyed by [[fire]] or explosions.{{Check Tag|Specificity|Any explosion or only Bomb type?}} When destroyed, whatever is built on top will be destroyed alongside it. 

Bridges can also be removed from the "Remove Bridge" gizmo under Architect/Structures.

== Analysis ==
Bridges are essential if you need certain objects on water, marsh or mud, such as wooden [[wall]]s. They are required to build [[moisture pump]]s over water, which can eventually remove the water. And due to the faster move speed, you can speed up colonists by placing bridges through their path. [[Raider]]s can also path through the bridge, giving you some control over their movement.

In practice, raiders will not attack ''any'' wall or door unless 1. they are [[sapper]]s or [[breacher]]s, or 2. they have no reasonable target to access to without breaking a wall. Therefore, wooden walls are relatively safe to use. For example, bridges and walls can be used to surround your [[watermill generator]]s, making them almost non-targets for raiders.

[[Power conduit]]s can be built on bridges, replacing the need for [[waterproof conduit]]s. The latter costs {{Icon Small|steel||10}} [[steel]], which is 10x more than a regular conduit. However, the bridge has its own wood cost, and bridges are much more vulnerable to [[fire]].

=== Path baiting ===
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Because bridges have a significantly lower pathcost compared to water and mud, [[raiders]] will naturally prefer to path over most bridges but will also not attract attacks from breachers like walls used to constrict passages. This can be exploited by placing traps on the bridges for raiders to trigger. While [[spike trap]]s will work for this purpose, [[IED trap]]s are particularly effective especially when paired with a large [[roof]] supported by a wooden wall that will be destroyed by the IED's detonation, dropping the roof on the enemies for additional damage.     

This strategy works even if the bridge does not cross the entire span of the water, as even the small improvement in path cost is often enough to tempt raiders to use them.

== Version history ==
* [[Version/1.2.2753|1.2.2753]] - Can now be auto-rebuilt.

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[[Category:Structure]]