PHOTO CASTLECARY VIADUCT THIS VIADUCT WHICH CROSSES THE M80 NEAR CASTLECARY WAS OPENED IN 1842 BY THE EDINBURGH AND GLASGOW RAILWAY. IT CARRIES THE 'DIRECT' EDINBURGH - GLASGOW MAINLINE RAILWAY ACROSS THE VALLEY OF THE RED BURN WHICH HERE FORMS THE BOUNDARY BETWEEN THE PARISHES OF FALKIRK AND CUMBERNAULD.