In reply to pasbury:
I'm not that familiar with the area, but you can look on here and see whether it's the Highways Agency's road.
http://assets.highways.gov.uk/our-road-network/our-network/s130522_NMD_JAN%...
If not, then the County Council will usually be the people to speak to (unless it's within a unitary authority).
You could try googling the improvement (or otherwise) works, sometimes Councils like to advertise what they're doing with roads, and you might be able to get hold of some drawings, or the name of the overseeing engineer.
In terms of getting something changed though, as noted by others, one voice isn't likely to get anything done. You could start by asking to see a copy of the road safety audit for the highways works, to see if it gets a mention in there.