a temporary intersection at Thompson Road to the south and the Keystone Avenue interchange north of I-465 until early 1971. With SR 100/Shadeland Avenue connected to the full southern and western bypass of Indianapolis, work on I-465's east leg slowed, delaying the opening of the next segment over three years. In January 1968, two sections of the east leg, between US 36/SR 67 (Pendleton Pike) and the SR 100 junction near Raymond Street, were completed and opened a day apart. This allowed through traffic from both US 36 and SR 67 to bypass the increasingly congested SR 100. The interchange with I-70 in this newly opened section was not yet complete, and its ramps did not open until the opening of that route's mainline between SR 100/Shadeland Avenue and SR 9 near Greenfield on December 2 of that year. On October 23, 1968, the section of I-465 between Pendleton Pike and 56th Street at Shadeland Avenue was finished and opened to traffic, completing the east leg's eastern bypass of SR 100. With its alignment controversies now settled, the north leg of I-465 began to take shape in the late 1960s. The section between US 421 (Michigan Road) and US 31 (Meridian Street) was the first on this side of town to see traffic on October 20, 1968. A year to the day later, the segment from US 31 to Keystone Avenue (then SR 431) was opened to motorists. The next month, in November 1969, the north extension of the west leg was completed and signed as I-465 (although it was considered to be "added mileage" by the Federal Highway Administration (FHWA) since it was built to Interstate standards using non-Interstate funds by Indiana), but only the portion between I-65 and 86th Street was opened to traffic because the segment of the north leg to which it would connect was not yet complete. That occurred on August 18, 1970, when the western end of the north leg between I-65 near Royalton and Michigan Road (US 421) was finished and opened to traffic. At that time, the final connection on the north extension of the west leg to 86th Street was also opened, leaving only one remaining gap in the entire I-465 route. The final section of I-465 to be built was the portion joining the north and east legs between Keystone Avenue (then SR 431) and 56th Street at Shadeland Avenue