Not only is Interstate 405 one of the busiest highways in the nation, but the 16-mile section of it in Orange County, Calif., runs through nine cities or communities and at an angle through the urban landscape.

Darrell Johnson’s ability to keep a $2-billion design-build highway widening on track despite multiple risks and challenges stems partly from his experience by way of commuter rail.

After more than 10 years of planning, the Orange County Museum of Art (OCMA) has a new facility more than double the size of its former space.

Extensive collaboration with multiple agencies and communities helped bring a complex highway and bridge job to fruition.