diff --git a/src/tunnelbridge_cmd.cpp b/src/tunnelbridge_cmd.cpp
--- a/src/tunnelbridge_cmd.cpp
+++ b/src/tunnelbridge_cmd.cpp
@@ -24,7 +24,7 @@
 #include "autoslope.h"
 #include "tunnelbridge_map.h"
 #include "strings_func.h"
-#include "date_func.h"
+#include "timer/timer_game_calendar.h"
 #include "clear_func.h"
 #include "vehicle_func.h"
 #include "sound_func.h"
@@ -206,7 +206,7 @@ CommandCost CheckBridgeAvailability(Brid
 	if (bridge_type >= MAX_BRIDGES) return CMD_ERROR;
 
 	const BridgeSpec *b = GetBridgeSpec(bridge_type);
-	if (b->avail_year > _cur_year) return CMD_ERROR;
+	if (b->avail_year > TimerGameCalendar::year) return CMD_ERROR;
 
 	uint max = std::min(b->max_length, _settings_game.construction.max_bridge_length);