Here's the snipet from the forest service website... http://www.fs.usda.gov/detail/eldora...telprdb5357470
All dirt roads and trails are closed to motor vehicle use between January 1 and March 31. If roads or trails are wet and susceptible to damage then the Seasonal closure will go into effect early or run longer until they dry. This closure is intended to protect water quality and prevent rutting and damage to these roads and trails. Approximately 600 miles of paved and gravel roads are not affected by the closure. The Rock Creek area near Georgetown has its own seasonal closure policy and procedures.