diff --git a/src/elrail.cpp b/src/elrail.cpp
--- a/src/elrail.cpp
+++ b/src/elrail.cpp
@@ -189,7 +189,7 @@ void DrawCatenaryOnTunnel(const TileInfo
 		sss->image, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
 		BB_data[2] - sss->x_offset, BB_data[3] - sss->y_offset, BB_Z_SEPARATOR - sss->z_offset + 1,
 		GetTileZ(ti->tile) + sss->z_offset,
-		IsTransparencySet(TO_BUILDINGS),
+		IsTransparencySet(TO_CATENARY),
 		BB_data[0] - sss->x_offset, BB_data[1] - sss->y_offset, BB_Z_SEPARATOR - sss->z_offset
 	);
 }
@@ -336,7 +336,7 @@ static void DrawCatenaryRailway(const Ti
 
 					AddSortableSpriteToDraw(pylon_sprites[temp], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE,
 							GetPCPElevation(ti->tile, i),
-							IsTransparencySet(TO_BUILDINGS), -1, -1);
+							IsTransparencySet(TO_CATENARY), -1, -1);
 					break; /* We already have drawn a pylon, bail out */
 				}
 			}
@@ -344,7 +344,7 @@ static void DrawCatenaryRailway(const Ti
 	}
 
 	/* Don't draw a wire under a low bridge */
-	if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && !IsTransparencySet(TO_BUILDINGS)) {
+	if (MayHaveBridgeAbove(ti->tile) && IsBridgeAbove(ti->tile) && !IsTransparencySet(TO_CATENARY)) {
 		uint height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
 
 		if (height <= GetTileMaxZ(ti->tile) + TILE_HEIGHT) return;
@@ -371,7 +371,7 @@ static void DrawCatenaryRailway(const Ti
 			 */
 			AddSortableSpriteToDraw(sss->image, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
 				sss->x_size, sss->y_size, sss->z_size, GetSlopeZ(ti->x + sss->x_offset, ti->y + sss->y_offset) + sss->z_offset,
-				IsTransparencySet(TO_BUILDINGS));
+				IsTransparencySet(TO_CATENARY));
 		}
 	}
 }
@@ -404,7 +404,7 @@ static void DrawCatenaryOnBridge(const T
 
 	AddSortableSpriteToDraw(sss->image, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
 		sss->x_size, sss->y_size, sss->z_size, height + sss->z_offset,
-		IsTransparencySet(TO_BUILDINGS)
+		IsTransparencySet(TO_CATENARY)
 	);
 
 	/* Finished with wires, draw pylons */
@@ -415,7 +415,7 @@ static void DrawCatenaryOnBridge(const T
 		if (HasBit(tlg, (axis == AXIS_X ? 0 : 1))) PPPpos = ReverseDir(PPPpos);
 		uint x = ti->x + x_pcp_offsets[PCPpos] + x_ppp_offsets[PPPpos];
 		uint y = ti->y + y_pcp_offsets[PCPpos] + y_ppp_offsets[PPPpos];
-		AddSortableSpriteToDraw(pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_BUILDINGS), -1, -1);
+		AddSortableSpriteToDraw(pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_CATENARY), -1, -1);
 	}
 
 	/* need a pylon on the southern end of the bridge */
@@ -425,7 +425,7 @@ static void DrawCatenaryOnBridge(const T
 		if (HasBit(tlg, (axis == AXIS_X ? 0 : 1))) PPPpos = ReverseDir(PPPpos);
 		uint x = ti->x + x_pcp_offsets[PCPpos] + x_ppp_offsets[PPPpos];
 		uint y = ti->y + y_pcp_offsets[PCPpos] + y_ppp_offsets[PPPpos];
-		AddSortableSpriteToDraw(pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_BUILDINGS), -1, -1);
+		AddSortableSpriteToDraw(pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_CATENARY), -1, -1);
 	}
 }
 
@@ -451,7 +451,7 @@ void DrawCatenary(const TileInfo *ti)
 					sss->image, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
 					sss->x_size, sss->y_size, sss->z_size,
 					GetTileMaxZ(ti->tile) + sss->z_offset,
-					IsTransparencySet(TO_BUILDINGS)
+					IsTransparencySet(TO_CATENARY)
 				);
 				return;
 			}