diff -r 3301b1b3889c -r 79f2b5a0cdd7 src/town_cmd.cpp
--- a/src/town_cmd.cpp	Fri Jun 01 20:54:09 2007 +0000
+++ b/src/town_cmd.cpp	Tue Jun 12 18:02:11 2007 +0000
@@ -1096,7 +1096,7 @@
 		do {
 			byte bridge_type = RandomRange(MAX_BRIDGES - 1);
 			if (CheckBridge_Stuff(bridge_type, bridge_len)) {
-				if (!CmdFailed(DoCommand(tile, tmptile, 0x8000 + bridge_type, DC_EXEC | DC_AUTO, CMD_BUILD_BRIDGE)))
+				if (!CmdFailed(DoCommand(tile, tmptile, bridge_type | ((0x80 | ROADTYPES_ROAD) << 8), DC_EXEC | DC_AUTO, CMD_BUILD_BRIDGE)))
 					_grow_town_result = -1;
 
 				/* obviously, if building any bridge would fail, there is no need to try other bridge-types */