This kit provides parts to build a half or full relief model of a typical motorway bridge - as used on the M1.
Only the parts for both sides of the bridge are included. You will need other scenic items to complete the scene, easily obtainable from a model shop.
Full instructions including measurements and advice for reproducing the road surface are given.
 
The bridge is scaled to cross a full six lane (plus two hard shoulders) motorway in 1/76 scale measuring 16" wide.
Please understand that the kit only contains parts for two bridge sides. 
You will need to provide a card deck for the bridge and also a base (MDF?) to build the scene on. The road surface is grey car aerosol paint, and the markings are simply strips of adhesive paper. The weathering is done by rubbing in some charcoal. 
Producing a realistic scene is much easier than you might imagine!