Steep driveway ideas

[BillTex]

Hi All,

Looking for ideas on what to do about steep (18*) driveway. The drive down to our lake camp is very steep-so steep no one will plow it in winter, so we walk in. We are at camp ~ 2x/month and young enough to hike in now, but are not getting any younger!
Current surface is some pavement and some gravel.
Our lot is long and narrow with steep drop off on both sides of driveway, so there is really no room to relocate the driveway.
The ultimate answer would be a heated drive-but that is not practical.
Any ideas on best surface for traction that is plowable?
Any other ideas on how to deal with a steep driveway?
Your experience and comments appreciated!

Thank you,

Bill