Index: src/engine.cpp
===================================================================
--- src/engine.cpp	(revision 9518)
+++ src/engine.cpp	(working copy)
@@ -348,6 +348,23 @@
 	}
 }
 
+bool IsEngineAvailable(uint32 engineType)
+{
+
+	Engine *e;
+
+	FOR_ALL_ENGINES(e) {
+
+		if(e->type == engineType && e->player_avail) {
+			return true;
+		}
+	}
+
+	return false;
+
+}
+
+
 /** Rename an engine.
  * @param tile unused
  * @param p1 engine ID to rename
Index: src/engine.h
===================================================================
--- src/engine.h	(revision 9518)
+++ src/engine.h	(working copy)
@@ -153,6 +153,7 @@
 void DeleteCustomEngineNames();
 
 bool IsEngineBuildable(EngineID engine, byte type, PlayerID player);
+bool IsEngineAvailable(uint32 engineType);
 
 enum {
 	NUM_NORMAL_RAIL_ENGINES = 54,
Index: src/main_gui.cpp
===================================================================
--- src/main_gui.cpp	(revision 9518)
+++ src/main_gui.cpp	(working copy)
@@ -45,6 +45,8 @@
 #include "network/network_gui.h"
 #include "industry.h"
 
+#include "engine.h"
+
 static int _rename_id = 1;
 static int _rename_what = -1;
 
@@ -291,17 +293,23 @@
 
 static void MenuClickBuildRoad(int index)
 {
-	ShowBuildRoadToolbar();
+	if(IsEngineAvailable(VEH_ROAD)) {
+		ShowBuildRoadToolbar();
+	}
 }
 
 static void MenuClickBuildWater(int index)
 {
-	ShowBuildDocksToolbar();
+	if(IsEngineAvailable(VEH_SHIP)) {
+		ShowBuildDocksToolbar();
+	}
 }
 
 static void MenuClickBuildAir(int index)
 {
-	ShowBuildAirToolbar();
+	if(IsEngineAvailable(VEH_AIRCRAFT)) {
+		ShowBuildAirToolbar();
+	}
 }
 
 #ifdef ENABLE_NETWORK