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{{Image wanted|reason=Main, widgets, etc}}
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{{stub}}{{image wanted}}{{infobox main|structure|
{{Infobox main|structure
 
 
| name = Bridge
 
| 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.
 
| 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 -->
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| image = Bridge.png|Bridge
| type = Building
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| type = Structure
| type2 = Structure
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| type2 =  
| hp = 100
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| placeable = True
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| size = 1 ˣ 1
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| hp = 35
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| speed = 1
 
| beauty = 0
 
| beauty = 0
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| terrain affordance = Bridgeable
 
| flammability = 0.8
 
| flammability = 0.8
<!-- Building -->
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| marketvalue =
| size = 1 ˣ 1
 
| placeable = True
 
| terrain affordance = Bridgeable
 
| cleaning time factor = 1
 
| filth multiplier = 1
 
| speed = 1
 
<!-- Creation -->
 
 
| work to make = 1500
 
| work to make = 1500
 
| resource 1 = Wood
 
| resource 1 = Wood
 
| resource 1 amount = 12
 
| resource 1 amount = 12
<!-- Technical -->
 
 
| tags = Floor
 
| tags = Floor
<!-- Wiki -->
 
 
| page verified for version = 1.3.3200
 
| page verified for version = 1.3.3200
 
}}
 
}}
'''Bridges''' are [[structures]] that can be built on [[Terrain|water]] to allow fast movement and the construction of light buildings.
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'''Bridges''' are [[structures]] that can be built on [[Terrain|water]], and allow light buildings on top of them.  
  
 
== Acquisition ==
 
== Acquisition ==
{{Acquisition}} They can only be constructed on the following terrain types:
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Building a bridge requires {{Required Resources}} and {{Ticks|{{P|Work To Make}}}} of work. They can only be constructed on the following terrain types:{{Check Tag|Moving water?|Verify Chest-deep moving water and shallow moving water?}}
* [[Marshy soil]]
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* [[Terrain#Marshy soil|Marshy soil]]
* [[Mud]]
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* [[Terrain#Mud|Mud]]
* [[Marsh]]
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* [[Terrain#Marsh|Marsh]]
* [[Shallow water]]
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* [[Terrain#Shallow water|Shallow water]]
* [[Shallow ocean water]]
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* [[Terrain#Shallow ocean 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.
 
In addition, if the map tile contains both a road and river, then bridges will spawn on the river.
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== Summary ==
 
== Summary ==
 
{{Stub|section=1|reason=destroyOnBombDamageThreshold of 35. Verify in-game and add}}
 
{{Stub|section=1|reason=destroyOnBombDamageThreshold of 35. Verify in-game and add}}
While structures, bridges act similar to a [[floor]] tile. Unlike the water they're built on, bridges don't penalize move speed, 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. [[Floor]]s cannot be constructed on top of bridges.
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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. If the terrain is unsuited to a [[moisture pump]], or pumps are unavailable, bridges are the only way 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 the Bomb damage type?}} When destroyed, whatever is built on top will be destroyed alongside it.  
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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.
 
Bridges can also be removed from the "Remove Bridge" gizmo under Architect/Structures.
  
 
== Analysis ==
 
== Analysis ==
Bridges are essential if you need certain objects on water, marsh or mud, such as wooden [[wall]]s. Bridges can also support [[moisture pump]]s directly over water, allowing them to more efficiently remove the water than if built on the shore. 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.
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Bridges are essential if you need certain objects on water or marshy soil, such as wood [[wall]]s, or [[moisture pump]]s, which removes the water. Due to the faster move speed, colonists and [[raider]]s alike may path through the bridge, allowing you to control their movement. In practice, raiders will not attack ''any'' wall unless 1. they are [[sapper]]s or [[breacher]]s, or 2. they have no reasonable target they have access to, so surrounding your [[watermill generator]]s with wooden walls is relatively safe.
 
 
In practice, raiders will not attack ''any'' wall or door unless:
 
# They are [[sapper]]s or [[breacher]]s; or  
 
# 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 ===
 
{{Image wanted|section=1|reason=Image of scattered (non-contiguous) bridge IED traps with roof drop}}
 
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.
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[[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]].
  
 
== Version history ==
 
== Version history ==
 
* [[Version/1.2.2753|1.2.2753]] - Can now be auto-rebuilt.
 
* [[Version/1.2.2753|1.2.2753]] - Can now be auto-rebuilt.
  
{{Nav|structure|wide}}
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{{nav|structure|wide}}
{{Nav|floor|wide}}
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{{nav|floor|wide}}
  
 
[[Category:Structure]]
 
[[Category:Structure]]

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