diff --git a/src/bridge.h b/src/bridge.h
--- a/src/bridge.h
+++ b/src/bridge.h
@@ -43,7 +43,6 @@ static inline const Bridge *GetBridge(ui
 void DrawBridgeMiddle(const TileInfo *ti);
 
 bool CheckBridge_Stuff(byte bridge_type, uint bridge_len);
-uint32 GetBridgeLength(TileIndex begin, TileIndex end);
 int CalcBridgeLenCostFactor(int x);
 
 #endif /* BRIDGE_H */