Ohio DNR routes

[TheCatalyst31]

I visited Burr Oak State Park a week ago, and I saw a sign for Natural Resources Route 10:


I looked for more info on either the route or the system, and I confirmed that DNR Route 10 appears on the park map, but I couldn't find much more about the DNR routes in general. Does anyone else know more about this system and the routes in it?

[route17fan]

Yes, they are statewide and seemingly random (I'm sure there is a system to it but I am not sure how they are numbered) They are also found in Headlands State Park at the north end of OH 44 for example.https://www.google.com/maps/@41.7552643,-81.2883902,3a,15y,247.25h,81.68t/data=!3m7!1e1!3m5!1s5-RPtgdchTz_iooYSK2XTg!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D8.31678100182755%26panoid%3D5-RPtgdchTz_iooYSK2XTg%26yaw%3D247.2534167422983!7i13312!8i6656?entry=ttu&g_ep=EgoyMDI1MDkwMy4wIKXMDSoASAFQAw%3D%3D
Also in north central Ohio, Mohican State Park has markers.  https://www.google.com/maps/@40.60536,-82.3041458,3a,15y,205.48h,88.94t/data=!3m7!1e1!3m5!1sK4-xDHFucibvMRmWrpfETg!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fcb_client%3Dmaps_sv.tactile%26w%3D900%26h%3D600%26pitch%3D1.062826162935977%26panoid%3DK4-xDHFucibvMRmWrpfETg%26yaw%3D205.478808185129!7i16384!8i8192?entry=ttu&g_ep=EgoyMDI1MDkwMy4wIKXMDSoASAFQAw%3D%3D
Various parks in Southeast Ohio (Hocking Hills) but I do not recall which roads I spotted them on