oh i miss the days of decent fuel economy. with a 50mph tailwind and God in the passenger seat, i am only able to get 16mpg.
barnwell is notorious for the disrepair of many of their trails. they're working hard to get it back, but their resources are limited, as are their funds. they have bids out for a contract to grade and level many of the trails.
the access road that turned into a 100ft mud bog was probably between Green Lane and On Any Sunday, which themselves are rated a 2 but have holes in them the size of dumpsters. as a general rule, add at least 1 star to every trail at Barnwell. some are the trails that were rated a 2 or 3, are now completely impassable.
ever since the big rainstorms in september and october, the park has gotten much, much worse. we still go out there any chance we get, though, because the park is so big that there are always trails for every difficulty and skill level. for the best experience, go in a group and try to spend at least 1 night there so you can prerun the trails (in the most capable vehicles) on the first day, so you know what you can and can't do, and don't spend the entire day doing 30-point u-turns on the trails.