The firms will plan the replacement or rehabilitation of nearly 100 bridges and other structures along a 6-mile stretch of Chicago's south side where more than 100 trans from six rail lines meet daily.

North Michigan Creek Reservoir and its surrounding facilities are among the main recreational attractions at State Forest State Park.

Located on 55 acres at Phoenix Sky Harbor International Airport, the $92.3-million expansion and renovation project included 60,339 sq ft of construction and 39,624 sq ft of renovations.

Built in the 1980s, the county’s light rail vehicle maintenance facility needed a complete rehabilitation. Work pits and other sections used to maintain the rail fleet were severely corroded and in a state of disrepair.

Converting the functionally obsolete cloverleaf interchange connecting I-70 and U.S. Route 19 into Pennsylvania’s first diverging diamond interchange required a traffic control plan to minimize disruptions to the tens of thousands of motorists who travel through the area daily.