The winter closure on the 580 road is currently at the Singing River Ranch where they stop plowing it. There is a snow pile at the ranch that you can easily drive around that and go a little bit further, however, the vehicle tracks soon stop.
If you‘ve got a 4x4 with chains, you could make it the .5-1.0 mile of snow to where it‘s then a dry road for another mile to mile and a half. Otherwise, you have to park .5 mile back down below the ranch property.
If someone would drive this section of snow, it will save you 3.5 miles (7 miles round trip) of hiking.
And, there is a nice snow packed trench in there if anyone wants Lindsey in winter. Get it before the next snow storm hits!