Off of I15 just north of the Brigham City exit - follow the signs. Visitor's Center is close to the entrance, then there is a twelve mile drive before you do the twelve mile loop. Best to do when the weather has been dry for awhile. The road can become muddy and slippery.
I spotted these three pelicans hanging out together at the Bear River Bird Refuge in northern Utah and couldn't get enough of them. I took several photos of them hanging out together.