Below is a link to Public Access Plan for the beaches from Loch Arbour to Elberon in Monmouth County. This Army Corps of Engineers document assesses access as of 2014 and it also covers what is expected of oceanfront towns in terms of providing parking and access to public beaches. Below is a link to the full PDF document:
And here are the Army Corps regulations for beachfills in general which includes information on parking and public access. The full pdf is 34 pages long but beach fees, and parking are mentioned on page 12 and 13.