I thought I'd never be able to come up with anything for this thread, but Sagtikos State Parkway used to have RIRO ramps to Crooked Hill Road(Suffolk CR 13) between the Long Island Expressway east-to-south ramp and the Crooked Hill Road bridge over the parkway.
A southbound on-ramp also used to exist from Long Island Motor Parkway... or at least they tried to make one.
Further north on Sunken Meadow, there used to be ramps for St. Johnland Road within Sunken Meadow State Park. Today, the northbound one is for park maitenance, but Hagstroms still thought it was a regular parclo for a long time.