A five-mile interim expansion will reduce congestion and improve mobility on State Route 24, a freeway that links southeastern Maricopa and northern Pinal counties to the Phoenix metropolitan area.

The $19.5-million Muscatine Organics Recycling Center is one of just three municipally owned food waste recycling facilities in the U.S. and the only one in the Midwest.

Gayle Roberts blazed a trail as the first female president, CEO and chairwoman of a global consulting engineering firm

The Hartwig & Associates acquisition adds a full suite of transportation services to Stanley Consultants' portfolio.

The 3.1-mile-long West Side Diversion Tunnel is a sanitary sewer that has been a decade in planning and four years in construction.