if they are interstates they should have them good all across the country. You have a lot in the east coast. Here we have a toll road where they have removed all ways of paying on location. If you use it you have to go home jump online and pay there. They are making a killing on this cause you can forget so easy...
Gene and Ilana De Laney Mt. Helix, California
2012 RS sm5
2012 RS sm5 , 998cc V-Twin 106hp DIY brake and park brake Classic Black
FYI. All toll pass systems have to be compatible in the next few years, by 2018 I think. A search will give you the details, don't have it in front of me at the moment. Federal law passed last year.
Now and then I consider getting an EZPass for the Ks Turnpike, but I don't need it too often. If it could be used in other states it might be worth it. Especially if I ever turn to New York, where almost every road is a toll road.