--- a/water_cmd.c	Thu Dec 28 16:11:07 2006 +0000
+++ b/water_cmd.c	Thu Dec 28 17:21:22 2006 +0000
@@ -629,7 +629,8 @@
 	};
 
 	/* Ensure sea-level canals do not flood */
-	if ((IsTileType(tile, MP_WATER) || IsTileType(tile, MP_TUNNELBRIDGE)) &&
+	if ((IsTileType(tile, MP_WATER) || IsTileType(tile, MP_TUNNEL) ||
+			IsTileType(tile, MP_STREET_BRIDGE) || IsTileType(tile, MP_RAILWAY_BRIDGE)) &&
 			!IsTileOwner(tile, OWNER_WATER)) return;
 
 	if (IS_INT_INSIDE(TileX(tile), 1, MapSizeX() - 3 + 1) &&