Based on a bridge in the Welsh Afan valley ... after an initial cost of £6.70 I bought the 'dark random Ashlar TX44 for the 3 bridge support walls @ £2.50, I already had the TX54 metal & wood effects which I used on the deck sides & between the rails plus I had the rest of the scenic materials and figures but I'll add on another £2.50 ... so total approx £12.70 .. well pleased The one it was based on (bit shorter etc)