In September 1970, bidding began for the final portion of the northern half of I-805 between Miramar Road and I-5; a month later, the segments between Home Avenue and SR 94, and SR 54 to 12th Street had funding allocated. By the end of the year, Hazard, Maxwell, and Matich had submitted the low bid of around $7.2 million (equivalent to $ in ) for the northernmost portion. The Chula Vista portion of the freeway from Main Street to L Street was completed in February 1971; by then, the estimated date for completing the entire freeway had slipped to 1975 from 1972. By March, the projected completion date for the Mission Valley bridge was revised to July 1972. A 102-home mobile home park was approved by the City Council a few weeks later to house those who were displaced by the freeway construction.