--- a/src/road_cmd.cpp	Wed Aug 08 21:28:03 2007 +0000
+++ b/src/road_cmd.cpp	Thu Aug 09 05:25:33 2007 +0000
@@ -588,6 +588,7 @@
 	TileIndex start_tile, tile;
 	CommandCost cost, ret;
 	bool had_bridge = false;
+	bool had_tunnel = false;
 	bool had_success = false;
 	DisallowedRoadDirections drd = DRD_NORTHBOUND;
 
@@ -633,12 +634,19 @@
 			_error_message = INVALID_STRING_ID;
 		} else {
 			had_success = true;
-			/* Only pay for the upgrade on one side of the bridge */
-			if (IsBridgeTile(tile)) {
-				if ((!had_bridge || GetBridgeRampDirection(tile) == DIAGDIR_SE || GetBridgeRampDirection(tile) == DIAGDIR_SW)) {
-					cost.AddCost(ret);
+			/* Only pay for the upgrade on one side of the bridges and tunnels */
+			if (IsTileType(tile, MP_TUNNELBRIDGE)) {
+				if (IsBridge(tile)) {
+					if ((!had_bridge || GetBridgeRampDirection(tile) == DIAGDIR_SE || GetBridgeRampDirection(tile) == DIAGDIR_SW)) {
+						cost.AddCost(ret);
+					}
+					had_bridge = true;
+				} else {
+					if ((!had_tunnel || GetTunnelDirection(tile) == DIAGDIR_SE || GetTunnelDirection(tile) == DIAGDIR_SW)) {
+						cost.AddCost(ret);
+					}
+					had_tunnel = true;
 				}
-				had_bridge = true;
 			} else {
 				cost.AddCost(ret);
 			}

--- a/src/video/win32_v.cpp	Wed Aug 08 21:28:03 2007 +0000
+++ b/src/video/win32_v.cpp	Thu Aug 09 05:25:33 2007 +0000
@@ -219,8 +219,9 @@
 
 	// recreate window?
 	if ((full_screen || _wnd.fullscreen) && _wnd.main_wnd) {
-		DestroyWindow(_wnd.main_wnd);
+		HWND wnd = _wnd.main_wnd;
 		_wnd.main_wnd = 0;
+		DestroyWindow(wnd);
 	}
 
 #if defined(WINCE)
@@ -519,6 +520,9 @@
 			break;
 
 		case WM_SIZE:
+			/* Resizing a destroy window is NOT good */
+			if (_wnd.main_wnd == 0) return;
+
 			if (wParam != SIZE_MINIMIZED) {
 				/* Set maximized flag when we maximize (obviously), but also when we
 				 * switched to fullscreen from a maximized state */
@@ -792,7 +796,9 @@
 {
 	DeleteObject(_wnd.gdi_palette);
 	DeleteObject(_wnd.dib_sect);
-	DestroyWindow(_wnd.main_wnd);
+	HWND wnd = _wnd.main_wnd;
+	_wnd.main_wnd = 0;
+	DestroyWindow(wnd);
 
 #if !defined(WINCE)
 	if (_wnd.fullscreen) ChangeDisplaySettings(NULL, 0);