The March 30 bridge collapse on Interstate 85 and resulting traffic nightmares served as a wake-up call for the state to speed up highway improvements aimed largely at congestion relief in metro Atlanta.

The Georgia Department of Transportation responded April 20 with an accelerated schedule for its Major Mobility Investment Program (MMIP) that calls for all 11 projects to be completed or under construction by 2025. Contracting is under way for the first projects expected to open to traffic: toll…