Work on Flatiron’s I-5 Oso Parkway Project in Laguna Hills, Calif. was halted for an hour on May 16 to educate workers on the signs and symptoms of substance abuse and mental health disorders. The program was created in coordination with the Associated General Contractors of California, along with Flatiron Construction, the California Dept. of Transportation, the Southern California District Council of Laborers of the Laborers’ International Union of North America and the Orange County Transportation Authority.