People whine about this stuff but don't do anything the help the situation.
A Group needs to adopt it. By doing volunteer work you can help that local office get money to maintain that area.
www.istea.org is the program you need to take advantage of. That money comes from some of the taxes you pay everytime you fill your truck.
What you do is get a group to do trash pickup, maintance work on the bridge if it can be done by hand, Clean out water bars, Silt fence where needed, seeding where needed, cut underbrush etc. You have to do this while working with the local ranger.
When you do it you note everything you used and had to expend to do the work including:
Gloves
Boots
Shovels
rakes
Food costs
Fuel to get there
How many adults worked
How many kids worked
I MEAN EVERYTHING. It all has a value. they will put a rental value on the tools you brought and used. A credit for boots, food and time. Even Kids get a partial credit. The Ranger then turns that in and the Feds issue a credit back to them that can be used to buy stuff like seed, Silt fence, Lumber, Hire a contractor to do repairs on the bridges that can't be done by volunteer labor Etc.
My Club doing exactly this is the only reason Beasley Knob OHV in North GA is open after Hurricane Opal and the storms it spawned dropped hundreds of trees on the trail and the local FS didn't have the funds to clear it. They locked it up and its quite possible it would still be closed to this day.
Now there are some things you have to be careful of. When you are working with the FS/BLM rangers you are actually under their workers comp. You have to be licensed to use Chain saws and even ATV's as a result. Get with your local BLM or FS office for the area you want ot work and see what you can do.