diff --git a/src/elrail.cpp b/src/elrail.cpp
--- a/src/elrail.cpp
+++ b/src/elrail.cpp
@@ -270,15 +270,9 @@ static void DrawCatenaryRailway(const Ti
 						continue; /* No neighbour, go looking for a better position */
 					}
 
-					SpriteID img = pylons_normal[temp];
-					SpriteID pal = PAL_NONE;
-					if (HASBIT(_transparent_opt, TO_BUILDINGS)) {
-						SETBIT(img, PALETTE_MODIFIER_TRANSPARENT);
-						pal = PALETTE_TO_TRANSPARENT;
-					}
-
-					AddSortableSpriteToDraw(img, pal, x, y, 1, 1, 10,
-							GetSlopeZ(ti->x + x_pcp_offsets[i], ti->y + y_pcp_offsets[i]));
+					AddSortableSpriteToDraw(pylons_normal[temp], PAL_NONE, x, y, 1, 1, 10,
+							GetSlopeZ(ti->x + x_pcp_offsets[i], ti->y + y_pcp_offsets[i]),
+							HASBIT(_transparent_opt, TO_BUILDINGS));
 					break; /* We already have drawn a pylon, bail out */
 				}
 			}
@@ -315,15 +309,9 @@ static void DrawCatenaryRailway(const Ti
 			assert(!IsSteepSlope(tileh[TS_HOME]));
 			sss = &CatenarySpriteData[Wires[tileh_selector][t][PCPconfig]];
 
-			SpriteID img = sss->image;
-			SpriteID pal = PAL_NONE;
-			if (HASBIT(_transparent_opt, TO_BUILDINGS)) {
-				SETBIT(img, PALETTE_MODIFIER_TRANSPARENT);
-				pal = PALETTE_TO_TRANSPARENT;
-			}
-
-			AddSortableSpriteToDraw(img, pal, ti->x + sss->x_offset, ti->y + sss->y_offset,
-				sss->x_size, sss->y_size, sss->z_size, GetSlopeZ(ti->x + min(sss->x_offset, TILE_SIZE - 1), ti->y + min(sss->y_offset, TILE_SIZE - 1)) + sss->z_offset);
+			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 + min(sss->x_offset, TILE_SIZE - 1), ti->y + min(sss->y_offset, TILE_SIZE - 1)) + sss->z_offset,
+				HASBIT(_transparent_opt, TO_BUILDINGS));
 		}
 	}
 }
@@ -354,41 +342,27 @@ static void DrawCatenaryOnBridge(const T
 
 	height = GetBridgeHeight(end);
 
-	SpriteID img = sss->image;
-	SpriteID pal = PAL_NONE;
-	if (HASBIT(_transparent_opt, TO_BUILDINGS)) {
-		SETBIT(img, PALETTE_MODIFIER_TRANSPARENT);
-		pal = PALETTE_TO_TRANSPARENT;
-	}
-
-	AddSortableSpriteToDraw(img, pal, ti->x + sss->x_offset, ti->y + sss->y_offset,
-		sss->x_size, sss->y_size, sss->z_size, height + sss->z_offset
+	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,
+		HASBIT(_transparent_opt, TO_BUILDINGS)
 	);
 
 	/* Finished with wires, draw pylons */
 	/* every other tile needs a pylon on the northern end */
 	if (num % 2) {
 		if (axis == AXIS_X) {
-			img = pylons_bridge[0 + HASBIT(tlg, 0)];
-			if (HASBIT(_transparent_opt, TO_BUILDINGS)) SETBIT(img, PALETTE_MODIFIER_TRANSPARENT);
-			AddSortableSpriteToDraw(img, pal, ti->x, ti->y + 4 + 8 * HASBIT(tlg, 0), 1, 1, 10, height);
+			AddSortableSpriteToDraw(pylons_bridge[0 + HASBIT(tlg, 0)], PAL_NONE, ti->x, ti->y + 4 + 8 * HASBIT(tlg, 0), 1, 1, 10, height, HASBIT(_transparent_opt, TO_BUILDINGS));
 		} else {
-			img = pylons_bridge[2 + HASBIT(tlg, 1)];
-			if (HASBIT(_transparent_opt, TO_BUILDINGS)) SETBIT(img, PALETTE_MODIFIER_TRANSPARENT);
-			AddSortableSpriteToDraw(img, pal, ti->x + 4 + 8 * HASBIT(tlg, 1), ti->y, 1, 1, 10, height);
+			AddSortableSpriteToDraw(pylons_bridge[2 + HASBIT(tlg, 1)], PAL_NONE, ti->x + 4 + 8 * HASBIT(tlg, 1), ti->y, 1, 1, 10, height, HASBIT(_transparent_opt, TO_BUILDINGS));
 		}
 	}
 
 	/* need a pylon on the southern end of the bridge */
 	if (DistanceMax(ti->tile, start) == length) {
 		if (axis == AXIS_X) {
-			img = pylons_bridge[0 + HASBIT(tlg, 0)];
-			if (HASBIT(_transparent_opt, TO_BUILDINGS)) SETBIT(img, PALETTE_MODIFIER_TRANSPARENT);
-			AddSortableSpriteToDraw(img, pal, ti->x + 16, ti->y + 4 + 8 * HASBIT(tlg, 0), 1, 1, 10, height);
+			AddSortableSpriteToDraw(pylons_bridge[0 + HASBIT(tlg, 0)], PAL_NONE, ti->x + 16, ti->y + 4 + 8 * HASBIT(tlg, 0), 1, 1, 10, height, HASBIT(_transparent_opt, TO_BUILDINGS));
 		} else {
-			img = pylons_bridge[2 + HASBIT(tlg, 1)];
-			if (HASBIT(_transparent_opt, TO_BUILDINGS)) SETBIT(img, PALETTE_MODIFIER_TRANSPARENT);
-			AddSortableSpriteToDraw(img, pal, ti->x + 4 + 8 * HASBIT(tlg, 1), ti->y + 16, 1, 1, 10, height);
+			AddSortableSpriteToDraw(pylons_bridge[2 + HASBIT(tlg, 1)], PAL_NONE, ti->x + 4 + 8 * HASBIT(tlg, 1), ti->y + 16, 1, 1, 10, height, HASBIT(_transparent_opt, TO_BUILDINGS));
 		}
 	}
 }
@@ -410,17 +384,11 @@ void DrawCatenary(const TileInfo *ti)
 			if (IsRailDepot(ti->tile)) {
 				const SortableSpriteStruct *sss = &CatenarySpriteData_Depot[GetRailDepotDirection(ti->tile)];
 
-				SpriteID img = sss->image;
-				SpriteID pal = PAL_NONE;
-				if (HASBIT(_transparent_opt, TO_BUILDINGS)) {
-					SETBIT(img, PALETTE_MODIFIER_TRANSPARENT);
-					pal = PALETTE_TO_TRANSPARENT;
-				}
-
 				AddSortableSpriteToDraw(
-					img, pal, ti->x + sss->x_offset, ti->y + sss->y_offset,
+					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
+					GetTileMaxZ(ti->tile) + sss->z_offset,
+					HASBIT(_transparent_opt, TO_BUILDINGS)
 				);
 				return;
 			}