Interstate 7 is a potential designation being considered for the California 99 corridor. With the publication of the Route 99 Corridor Master Plan, the recommended designation for California 99 is more likely to be Interstate 9. However, several other sources (including Wikipedia, The San Francisco Chronicle, and other media) are reporting that California 99 may become Interstate 7. However, none of these have cited an official source confirming California 99 will be Interstate 7. So, the Route 99 Corridor Master Plan is about as close to official as we have found that the new designation will be Interstate 9.