Bridges

Bridges may be constructed at predefined river sites (Bridgeheads) to allow units and supply lines to cross otherwise uncrossable sections of water. Bridgeheads are capturable landing sites on the banks of a river crossing used as bases for constructing bridges. *Only if walls are constructed.

Description
Bridges may be constructed at river crossings to aid the movement of friendly units and resources across a river or to block movement by enemies. Ox-carts and supply lines always require a bridge to cross a river; however, if a crossing is marked as a ford, regular units may cross without a bridge but will suffer a significant combat penalty while in the water.

River crossing are indicated by a pair of bridgeheads, one on each bank, that may be captured independently and used as staging points for supplies. Once either of the bridgeheads is controlled you can use the button in the bottom-right command panel to construct a bridge. Bridges cannot be built while enemy units are nearby.

Bridges require wood for construction. To get wood to the construction site, connect a supply line from the bridgehead back to any building on your supply network. During construction, the bridge will automatically pull wood from the nearest source e.g. an active lumber camp or stores of wood in a camp or city.

Bridges have an ongoing cost to maintain them and, once constructed, can be fortified with walls and garrisoned with units similar to a camp or city. Enemy units must lay siege to a fortified bridges before it can be captured or demolished.

How-to
To build a bridge: select a unit, click the ‘Construct Building’ button in the command panel and then right-click on a ghosted camp preview on the map.

Similar to cities and camps, bridges can be garrisoned with units, fortified with walls and connected to other buildings with supply lines.

Supply lines always require a bridge to cross a river, but regular units may cross at any time if the bridgehead is marked as a ford.

Naval supply lines can go through friendly bridges, but cannot move past enemy bridges.

Available upgrades
The only upgrade available for bridges are walls