OpenStreetMap -    ,<br>
   ,<br>
     <br>
    .<br>
<br>
: <a href=http://www.openstreetmap.org>http://www.openstreetmap.org</a>
Highlighting bridges (bridge=yes), viaducts (bridge=viaduct), tunnels (tunnel=yes), embankments (embankment=yes)and cuttings (cutting=yes)on mainline railways.
<img src="024.png">