Officials admit they changed the bidding rules mid-stream so that a company that was lowest-rated (Tutor Perini) became the highest-rated. And, by magical coincidence, Tutor Perini is partially owned by Richard Blum (Diane Feinstein's husband):
http://www.latimes.com/news/local/la-me-high-speed-bidding-20130419,0,188616.story