I had to walk back and grab this shot because I thought it summed up the Nabesna Road conditions perfectly.
This is one of a number of water crossings along this road. The water is fairly low on this day, it can be higher. As you can see, it isn’t a problem with a high clearance vehicle, but it would be a challenge in a small rental car, and probably against your contract. There is a small visitor center at the beginning of the road, I recommend stopping in here for the latest road conditions. Even if they are closed, they will have the information posted on the outside of the cabin.
I should also mention, there aren’t any services along this road. You definitely want to be self sufficient and have at least one good spare tire, along with plenty of gas and food.
This is a nice drive, through some beautiful, remote country. Outside of hunting season in the fall, you will see very few people, you might see more caribou then people! There are also some pretty neat old cabins and mines, it is definitely an area worth exploring.
The road to McCarthy is another great way to see the Wrangell-St Elias National Park.