Sure.
So believe I am a liar. Fair enough, I guess. I haven't got any evidence I'm willing to give you. I'm sure your experience as a hiker provides more incite into how the national parks facilities are designed and construction than my experience as a design engineer working for the national parks.
What people thought the ADA required initially had this effect. The requirement for handicapped parking spaces at government buildings had an odd effect in the Air Force. The number of spaces specified was based on the number of employees, and customers the building served. Our Aircrew Life Support building, where our helmets, oxygen masks and so forth were cared for, served about four hundred flyers, and flight qualled support personnel. On that basis it had it's parking lot rearranged with most of the first two rows handicapped spots (the rest were VIP or Alert Crew). There are no handicapped active duty flyers. Later they got a reinterpretation of the requirement and fixed the parking.
There were similar things in the Navy, most of the piers my ship tied up to had handicap spots. For an aircraft carrier this would mean the infirm could park next to the two stories of stair and 30 or so feet of gang plank made mostly of tripping hazards or I suppose use a crane.
@belz, its a joke mostly because in 10 or so years of doing projects with the National Parks, I dealt with that maybe 3 times, so they aren't really indicative of how the parks as a whole operate, just a few west coast parks. A more common failing was assuming that if something is old it most be valuable. Lots of designs trying to save old New Deal era out houses and what not. There was also one project that my boss was involved with. After the maintenance manager of a park retired it was discovered that he'd built a building with the surplus budget. He kind of knew what he was doing in terms of construction but not so much in terms of design. The task my boss an our architects had was in figuring out how to bring the thing into compliance with the building code. I also don't know what happened with that building either.