diff --git a/src/micropolisj/engine/Sprite.java b/src/micropolisj/engine/Sprite.java
index 8cac75b..a8fb50b 100644
--- a/src/micropolisj/engine/Sprite.java
+++ b/src/micropolisj/engine/Sprite.java
@@ -175,7 +175,7 @@ public abstract class Sprite
 		int t = z & LOMASK;
 
 		if (t >= TREEBASE) {
-			if (TileConstants.isBridge(z)) {
+			if (isBridge(z)) {
 				city.setTile(xpos, ypos, RIVER);
 				return;
 			}
@@ -188,7 +188,7 @@ public abstract class Sprite
 					city.makeExplosion(xpos, ypos);
 				}
 			}
-			if (TileConstants.checkWet(t)) {
+			if (checkWet(t)) {
 				city.setTile(xpos, ypos, RIVER);
 			}
 			else {
diff --git a/src/micropolisj/engine/TileConstants.java b/src/micropolisj/engine/TileConstants.java
index 20b0fd7..defa475 100644
--- a/src/micropolisj/engine/TileConstants.java
+++ b/src/micropolisj/engine/TileConstants.java
@@ -293,8 +293,7 @@ public class TileConstants
 	//used by Sprite::destroyTile
 	public static boolean isBridge(int tile)
 	{
-		return (((tile & LOMASK) >= ROADBASE && (tile & LOMASK) <= LASTROAD)
-			&& !isCombustible(tile));
+		return isRoad(tile) && !isCombustible(tile);
 	}
 
 	public static boolean isCombustible(int tile)