This 30,000-sq-ft training and maintenance center supports a streetcar system created to link neighborhoods in the nation’s capital.

Faced with economic and environmental uncertainties, the Hampton Roads Sanitation District (HRSD) was challenged to adapt its 249 million gallons per day wastewater-treatment network to address and maintain reliable service to more than 1.7 million residents across southeast Virginia while safeguarding the region’s diminishing water supply and ecologically sensitive Chesapeake Bay.

Designed to substantially reduce combined sewer overflows to the waterways of the nation’s capital, the $240-million, 12,300-ft-long hydraulic tunnel traverses a route that includes varying subsurface conditions, fragile utility networks and above-ground environments ranging from rivers and parks to densely populated urban neighborhoods.

This 193,200-sq-ft high school is a fitting successor, the team says, to a locally cherished, historically significant facility that no longer supported the needs of contemporary education.

The circular 23,500-sq-ft child development center emphasizes sustainability in ways beyond its large windows, intricate landscaping and extensive use of natural interior finishes, the team says.

The project team says technology played a central role in the $68.3-million plan to construct five dual bridges within an 11-mile section of the planned 1,500-mile Continental 1 international trade corridor, connecting Canada with Florida.

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.

The project called for a major traffic change, replacing a congested signal-controlled intersection in a primary commercial corridor with a three-lane roundabout.

Replacing the concrete open spandrel arch bridge that had served as Pittsburgh’s eastern gateway for nearly a century was more challenging than the original construction.

The two-story building targeting LEED Gold certification serves as a consolidated scientific research facility at one of the largest marine research centers in the country, according to the project team.