Pile & Frame Trestle Bridge - unassembled model lesser-cut kit. (Discontinued)
Blair Line Bridge Company no. 171.  
HO scale, Pre Loved.
Manufacturers Quoted information from their website: -  
The first trestle kit to include laser-cut piers, laser-cut bulkheads, and Bridge Flex Trak. All the other manufacturers making laser cut bridges have copied this kit, so it must be a good one! Beware, none of the other manufacturer's kits include bridge track. This is the easiest wood trestle kit you will ever build!
May be built straight or curved.
Full scale drawings are also included to use as construction templates.
Includes Bridge Flex Trak. Code 83 in HO scale .
Pile and frame type trestle found on nearly every railroad in North America.
HO scale bridge: 6" long, 2" tall.