In eastern Iowa, new sections of road were opened . 1962 saw the eastern section extended 20 miles west to Iowa City and the central section was extended 25 miles east to Grinnell. Iowa City's section of interstate was completed on November 15, 1963. A section, the longest section to be opened at one time, connected the two sections in October 1964. The easternmost section of I-80, from US 61 to US 67 at the Mississippi River, opened a month later. This gave travelers nearly of uninterrupted freeway driving.