diff --git a/src/transparency_gui.cpp b/src/transparency_gui.cpp
--- a/src/transparency_gui.cpp
+++ b/src/transparency_gui.cpp
@@ -22,6 +22,7 @@ enum TransparencyToolbarWidgets{
 	TTW_WIDGET_BUILDINGS,    ///< Make player buildings and structures transparent
 	TTW_WIDGET_BRIDGES,      ///< Make bridges transparent
 	TTW_WIDGET_STRUCTURES,   ///< Make unmovable structures transparent
+	TTW_WIDGET_CATENARY,     ///< Make catenary transparent
 	TTW_WIDGET_LOADING,      ///< Make loading indicators transperent
 	TTW_WIDGET_END,          ///< End of toggle buttons
 };
@@ -43,7 +44,7 @@ static void TransparencyToolbWndProc(Win
 			break;
 
 		case WE_CLICK:
-			if (e->we.click.widget >= TTW_WIDGET_SIGNS) {
+			if (e->we.click.widget >= TTW_WIDGET_SIGNS && e->we.click.widget < TTW_WIDGET_END) {
 				if (_ctrl_pressed) {
 					/* toggle the bit of the transparencies lock variable */
 					ToggleTransparencyLock((TransparencyOption)(e->we.click.widget - TTW_WIDGET_SIGNS));
@@ -61,8 +62,8 @@ static void TransparencyToolbWndProc(Win
 
 static const Widget _transparency_widgets[] = {
 { WWT_CLOSEBOX,   RESIZE_NONE,  7,   0,  10,   0,  13, STR_00C5,                 STR_018B_CLOSE_WINDOW},
-{  WWT_CAPTION,   RESIZE_NONE,  7,  11, 184,   0,  13, STR_TRANSPARENCY_TOOLB,   STR_018C_WINDOW_TITLE_DRAG_THIS},
-{WWT_STICKYBOX,   RESIZE_NONE,  7, 185, 196,   0,  13, STR_NULL,                 STR_STICKY_BUTTON},
+{  WWT_CAPTION,   RESIZE_NONE,  7,  11, 206,   0,  13, STR_TRANSPARENCY_TOOLB,   STR_018C_WINDOW_TITLE_DRAG_THIS},
+{WWT_STICKYBOX,   RESIZE_NONE,  7, 207, 218,   0,  13, STR_NULL,                 STR_STICKY_BUTTON},
 
 /* transparency widgets:
  * transparent signs, trees, houses, industries, player's buildings, bridges, unmovable structures and loading indicators */
@@ -73,13 +74,14 @@ static const Widget _transparency_widget
 {   WWT_IMGBTN,   RESIZE_NONE,  7,  88, 109,  14,  35, SPR_IMG_COMPANY_LIST, STR_TRANSPARENT_BUILDINGS_DESC},
 {   WWT_IMGBTN,   RESIZE_NONE,  7, 110, 152,  14,  35, SPR_IMG_BRIDGE,       STR_TRANSPARENT_BRIDGES_DESC},
 {   WWT_IMGBTN,   RESIZE_NONE,  7, 153, 174,  14,  35, SPR_IMG_TRANSMITTER,  STR_TRANSPARENT_STRUCTURES_DESC},
-{   WWT_IMGBTN,   RESIZE_NONE,  7, 175, 196,  14,  35, SPR_IMG_TRAINLIST,    STR_TRANSPARENT_LOADING_DESC},
+{   WWT_IMGBTN,   RESIZE_NONE,  7, 175, 196,  14,  35, SPR_BUILD_X_ELRAIL,   STR_TRANSPARENT_CATENARY_DESC},
+{   WWT_IMGBTN,   RESIZE_NONE,  7, 197, 218,  14,  35, SPR_IMG_TRAINLIST,    STR_TRANSPARENT_LOADING_DESC},
 
 {   WIDGETS_END},
 };
 
 static const WindowDesc _transparency_desc = {
-	WDP_ALIGN_TBR, 58+36, 197, 36, 197, 36,
+	WDP_ALIGN_TBR, 58+36, 219, 36, 219, 36,
 	WC_TRANSPARENCY_TOOLBAR, WC_NONE,
 	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_STICKY_BUTTON,
 	_transparency_widgets,