Ove the years I've worked on lots of projects for National Highways some more interesting than others. One of the most recent was doing a historic asset management survey of the A1 from Newcastle upon Tyne to the Scottish border. This consisted of driving the route with a buddy, armed with maps showing the location of heritage assets (mostly mileposts, old bridges and culverts - many of which are listed) which NH are responsible for the upkeep of. Finding safe places to park to get a closer look was sometimes challenging, and we finished up about even on finding things that had disappeared since the last check, and finding things that had previously been presumed lost.