diff -r 50e315db0024 src/bridge_gui.cpp
--- src/bridge_gui.cpp	Mon Nov 24 19:31:01 2008 +0000
+++ src/bridge_gui.cpp	Mon Nov 24 20:39:04 2008 +0100
@@ -21,6 +21,9 @@
 #include "widgets/dropdown_func.h"
 
 #include "table/strings.h"
+
+BridgeType _last_railbridge_type = 0;
+BridgeType _last_roadbridge_type = 0;
 
 /**
  * Carriage for the data we need if we want to build a bridge
@@ -93,6 +96,17 @@
 
 	void BuildBridge(uint8 i)
 	{
+		TransportType type = (TransportType)(this->type >> 15);
+		switch (type) {
+			case TRANSPORT_RAIL:
+				_last_railbridge_type = this->bridges->Get(i)->index;
+				break;
+			case TRANSPORT_ROAD:
+				_last_roadbridge_type = this->bridges->Get(i)->index;
+				break;
+			default:
+				break;
+		}
 		DoCommandP(this->end_tile, this->start_tile, this->type | this->bridges->Get(i)->index,
 				CcBuildBridge, CMD_BUILD_BRIDGE | CMD_MSG(STR_5015_CAN_T_BUILD_BRIDGE_HERE));
 	}
@@ -286,6 +300,33 @@
 	 *     14..8 = road/rail types,
 	 *      7..0 = type of bridge */
 	uint32 type = (transport_type << 15) | (road_rail_type << 8);
+	
+	/* If Ctrl is being pressed, check wether the last bridge built is available 
+	 * If so, return this bridge type. Otherwise continue normally.
+	 * We store bridge types for each transport type, so we have to check for
+	 * the transport type beforehand.
+	 */
+	const uint bridge_len = GetTunnelBridgeLength(start, end);
+	
+	BridgeType last_bridge_type = 0;
+	switch (transport_type) {
+		case TRANSPORT_ROAD: 
+			last_bridge_type = _last_roadbridge_type;
+			break;
+			
+		case TRANSPORT_RAIL:
+			last_bridge_type = _last_railbridge_type;
+			break;
+			
+		default:
+			/* water ways and air routes don't have bridge types */
+			break;
+	}
+	if ( (_ctrl_pressed) && (CheckBridge_Stuff(last_bridge_type, bridge_len))) {
+		DoCommandP(end, start, type | last_bridge_type, CcBuildBridge,
+					CMD_BUILD_BRIDGE | CMD_MSG(STR_5015_CAN_T_BUILD_BRIDGE_HERE));
+		return;
+	}
 
 	/* only query bridge building possibility once, result is the same for all bridges!
 	 * returns CMD_ERROR on failure, and price on success */
@@ -298,9 +339,9 @@
 	} else {
 		/* check which bridges can be built
 		 * get absolute bridge length
-		 * length of the middle parts of the bridge */
-		const uint bridge_len = GetTunnelBridgeLength(start, end);
-		/* total length of bridge */
+		 * length of the middle parts of the bridge.
+		 *
+		 * total length of bridge */
 		const uint tot_bridgedata_len = CalcBridgeLenCostFactor(bridge_len + 2);
 
 		bl = new GUIBridgeList();