 In 1976, SR 72 was indicated to be "projected mileage" from this point south to US 78/SR 10, then southwest and west to end at US 441/SR 15.In 1980, the freeway was completed along this path, with US 129/US 441/SR 15 designated on it.The next year, the portion of the freeway between US 29/SR 8/SR 72 and US 78/SR 10 on the northeastern part was downgraded to a divided highway.