Indiana has a brand new interstate and they build a 2 mile section of it over highway 57. I have an email from the Indiana department of transportation stating they were aware of the problem and were working on it. It is easy enough to avoid if you use google maps. I recommend using the Firefox addon scrapbook it will allow you save any web page. They are doing it wrong but I have contacted the right people and informed them of the laws. These are hard to find being written before 1876 but they do exist and are still valid. Also a federal judge has ruled banning horses and wagons from the roads is a violation of the religious freedom clause of the constitution. there are Amish in the area and I will try to contact them. I think in this matter some one besides my self will actually read the law and interstates built over existing roads all over the country will be open to bicycle travel.