The MUP closest to me is kept in good repair by the city. When this 60+ mile path leaves the town it is no longer kept repaired. Some sections close for years and other sections are slowly returning to nature. One section went to nice tarred pebble surface to a single thin path through high grass.
This is a classic example of funding a quick build and no funds to maintain it. As a result it is sparsely used in the rural areas. I won't bring up politics.