HO scale Bargo Road Bridge on the Southern Highlands line.
Honest Al wanted these bridges for his layout, he supplied the plans for them and i have built them.
Bargo Bridge is 272 mm long stands 107 mm high and is 120 mm wide.
The rail opening is designed for a double track layout with a opening of 90 mm wide and 80mm high. If you run with 50 mm centres than as you can see there is plenty of clearence.