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...)
12098 Falls of the Neuse Road - From the I-440 beltline take Capital Blvd North exit 11B. Travel 6.4 miles and turn left on Durant Road. Travel 2.3 miles and turn right on Falls of the Neuse Road. Travel 2.4 miles and just before crossing over the Neuse River turn right on a gravel road which ends at the access point. Turning left before the bridge will end in the Army Corps of Engineers parking lot which has access to the base of the dam.
(35.939118,-78.577094)
Google Satellite Map (put-in)