McKim & CreedClient: Preston Development
With a focus on sustainability amid the area’s continuing growth, the project team designed a state-of-the-art facility that treats wastewater from nearby North Village, a 2,224-acre mixed-use community within Chatham Park. Only the second of its kind in the U.S., the facility can recycle up to 182 million gallons of water annually and store up to 100,000 gallons of reclaimed water on-site. In addition, the center features a five-stage biological greenhouse nutrientremoval system that incorporates native plants and a pollination garden featuring 250,000 bees. Within the greenhouse, microorganisms are cultivated among plant roots to remove carbonaceous material, uptake nutrients, and break down waste—all without the use of chemicals.
KPFFClient: Port of Seattle
The most complex project in Seattle-Tacoma International Airport’s history, the new International Arrivals Facility (IAF) more than doubles international arrival capacity by skillfully adding space and functionality within a small footprint. The facility features a spectacular 780-foot-long aerial walkway—the longest of its kind in the world; a 450,000-square-foot multilevel Grand Hall with an expanded baggage claim area; and enhanced U.S. Customs and Border Protection facilities that include new staff offices. A sterile corridor along the face of the existing Concourse A can be configured to accommodate eight widebody aircraft gates for international flights with direct access to the IAF.
Severud AssociatesClient: COOKFOX Architects, DPC
Rising over 320 feet above the corner of Greenwich and Vandam streets in Manhattan, 100 Vandam offers approximately 150,000 square feet of luxurious and sustainable residential and street-level retail space. Maintaining and restoring the existing façades of the previous buildings at 100 and 98 Vandam Street was challenging, as the new tower was essentially carved into the “gut” of the centuryold façades. The goal was to maintain the district’s historic atmosphere while the new glass façades and verdant balconies add a modern aesthetic. Once engineers tied the superstructure to the existing façade, the bracing was removed, leaving the original streetscape intact. The masonry was refinished to restore the original beauty and craftsmanship.
Souder, Miller & AssociatesClient: Navajo Nation
Designed and constructed in eight phases over 13 years, the new transmission system supplies clean, reliable, potable tap water from the Cutter Reservoir to more than 10,000 Navajo Nation members across eight communities and four counties in rural New Mexico. Residents previously had to rely on inconsistent and subpar groundwater, as well as costly water transported from other regional sources. The project included about 84 miles of a new transmission system, including pumping plants, storage tanks, surge tanks, chlorinators, and system control installations. Instead of solely relying upon maps and satellite imagery to finalize the alignment, the project team walked the entire route to fully evaluate the actual terrain; identify all road, waterline, and utility crossings; and avoid all known archaeological and cultural sites.
Stantec/Qk4/AECOMClient: Kentucky Transportation Cabinet
Bridging Kentucky provides an innovative strategy to rehabilitate, repair, or replace hundreds of deficient bridges across the commonwealth. Led by Stantec and featuring expertise from 16 other engineering consultants, the project team conducted extensive structural assessments, and executed the most cost-effective and time-efficient plan to bring the bridges up to current safety standards. The team also developed a programmatic approach to expedite bridge construction while minimizing costs. Streamlining design requirements reduced the project development process from approximately four years to fewer than 18 months. The project allows the Kentucky Transportation Cabinet to address state bridge issues while shortening development timelines and reducing costs.
TerraconClient: Dulany Industries
The 755-acre remediation of the Tronox site at the SeaPoint Industrial Terminal Complex in Savannah is the largest clean-up effort in the history of Georgia’s Environmental Protection Division’s Brownfields Program. The project team provided a variety of remedial services, including excavation of contaminated material from drainage ditches, uplands, and wetlands, and consolidation of titanium dioxide waste and dredge spoils. Redevelopment of the site will create more than 1,700 high-wage jobs and is projected to generate an annual economic impact of nearly $1 billion.
TranSystemsClient: Terminal Railroad Association of St. Louis
Opened in 1889, Merchants Bridge is the second-oldest bridge over the Mississippi River in the St. Louis region. As one of the nation’s primary links to eastern and western U.S. rail networks, the bridge had exceeded its design life and was operating under a variety of speed, clearance, and load restrictions. To bring the bridge back to efficient reliability, the project team designed reconstruction of the main span trusses, deck plate girder approaches, and the east approach trestle encasement. The bridge can now handle two freight trains at once, while also offering extra capacity to provide higher-velocity rail car movement to the Gulf, Canada, and Mexico.
WSP USAClient: Tishman Speyer
Known as “the Spiral” the 1,041-foot-tall, 66-story commercial office building offers 2.85 million square feet of space. The project team utilized innovative structural design to successfully achieve the spiraling terraces that give the building its namesake, featuring unique floor plates at each tower level. The complexity of the horizontal trusses at so many different elevations required creative connections to the core columns. In addition, team members collaborated to achieve LEED Silver Certification for the building, which included using 33,000 tons of sustainable steel manufactured from 100 percent recyclable materials.