Note that I try to keep this info up-to-date, but be sure to check the web links, and also check with these parks & locations to be 100% sure (I could be wrong, and sometimes their rules change...)
From the I-440 beltline take Capital Blvd North exit 11B. Travel 2 miles and turn right on Buffaloe Road. Travel 3.6 miles and just before crossing over the river turn right on Elizabeth Drive which will end at the access point. Caution: a 10 ft dam is located 3.5 miles downstream.
(35.847837,-78.530416)
Google Satellite Map (put-in)