Every single road work in Scotland should be logged on the Road Works Register, which can be accessed at:
http://www.roadworksscotland.org/default.aspx
There is no excuse for "losing" previous road works.
There is lots of guidance on road reinstatements, which is very, very dull. In essence, all road openings must be reinstated to the standards set by the local authority - which can include half and full carriageway resurfacing in certain circumstances. The authority can inspect any reinstanement and require remedial action to be taken if it doesn't meet the required standards.
Failure to comply with these requirements can lead to a penalty being imposed (although these are puny).
As I see it, the problems are:
1. Local authorities don't have the man-power to undertake enough inspections.
2. Penalties for non-compliance are smaller than the cost of decent reinstatments.
3. There is no reputational damage to the companies responsible for poor quality re-instatements.
4. The Scottish Road Works Commissioner has no powers to speak of.