Go to this link - Its very useful.
Get to know how to use all of the features.
<!-- m --><a class=\"postlink\" href=\"http://ndismaps.nrel.colostate.edu/huntingatlas/\" onclick=\"window.open(this.href);return false;\">http://ndismaps.nrel.colostate.edu/huntingatlas/</a><!-- m -->
Zoom in to the areas you are looking at and then
Click the FS-MVUM [Forest Service - Motor Vehicle Use Map] tab on the upper right corner.
It will show open and closed trails.
You can also toggle between aerial and topo
Lexus, it depends somewhat on which scale of map you want. Some people prefer the larger scale maps, but I like the 1 inch per mile topographic maps. If you call the local Forest Service office ask if they have one in black and white. I did not specify B&W and got one in green and black. It is hard to read. I do not know if the online map sources can keep up with all of the road closures, but you can get site specific maps there.
It\'s mainly forest roads here in Colorado, ie...FR 561 or trails TR 1608. Most public land here is either national forest or blm.
I have a Colorado Gazetteer by DeLorme, which you can pick up in Sportsmans Warehouse or other outdoor stores here. That gives you the big picture. I also use National Forest maps, which if up-to-date, gives you good trail info. There are also the topo maps as was mentioned.
For hiking, hunting I use the National Geographic Trails Illustrated topo maps. These cover just about the entire mountain areas and are water resistant. Along with topo info, they show pack trails, forest roads, gates on roads, trail usage(hiking, atv, dirt bike, horse, etc....), camping areas, and they show trail closure dates as some motorized use trails (atvs/dirt bikes) get closed during hunting season, usually Labor Day is the last day. You can buy these at any outdoors store.