The interchange is a major traffic hub for the San Francisco Bay Area. From the interchange, I-280 then runs just to the west of the larger cities of San Francisco Peninsula for most of its route to San Francisco.Roads at junction · · · Story RoadTypeFour-level InterchangeConstructed1976–81Opened1981OverviewThe Joe Colla Interchange is a in, United States, connecting (I-280),, and (US 101). It is named after Joe Colla, a former of San Jos. The highway is a four level. US-101 serves the first level of the complex. The second level marks the southern termini of both I-280 and I-680, as their primary lanes head into each other; I-280 then ru. The construction of the Joe Colla Interchange was delayed for almost five years. By January 1976, the state's budget woes resulted in construction being abandoned, leaving three uncompleted flyover ram.