Plans for I-45 North It’s been listed as one of the most congested freeways in Texas. Now TxDOT is seeking public input on how to prepare I-45 North for even more traffic in the future. Right now, TxDOT is gathering public comment on what’s known as the North Houston Highway Improvement Project. The project includes I-45 North between Beltway 8 and downtown Houston, but it also includes nearby roadways such as the Hardy Toll Road, along with connections to I-10 and U.S. 59.