Me thinks you guys went through the gate and ventured into the Nisene Marks Demonstration area. I hope that isn't true since we all know about being responsible off-road enthusiasts...
Mtbcoach is right. the dirt roads in Nisene Marks are closed to vehicular traffic outside of Buzzard Lagoon Road, which is a 3-4 mile stretch that is open to the public from May-September. from October-April, it is only open to residents due to possible trail damage from overuse during wet weather season. rangers will cite you if caught.Nope. Where we went had many muddy trails already. Also, there were many other vehicles out there too.
please remember that just because there is a dirt road does not necessarily mean it is open to general vehicular traffic. please wheel responsibly and call your local ranger district in advance if you are not sure whether or not a certain road is accessible.