The cache location is related to the three locations below although
it is NOT at any of them. Parking is found at the listing
coordinates. The cache is a sandwich-sized plastic container.
N39 18.725 W76 41.261
N39 18.536 W76 41.063
N39 18.309 W76 41.176
Another clue. It might confuse. On the other hand, it may amuse.
“The Chesapeake Bay Bridge doesn’t, but many bridge
decks include 25% of these. Anything less would be a bad
deal.” Really, this is just a game.
Coming at the cache from the suggested parking, it is easiest to
go "up" at the bench.
Fizzycalc (internet search) is a free PC utility that is very
useful for measuring the distance and bearing between two points
and for projecting a waypoint.
The cache contains a memento for the first five finders.
You can check your answers for this puzzle on
Geochecker.com.