Engineering Inc. - May/June 2008 - 30

AC E C 2 0 0 8 EnginEEr ing ExC El l EnCE AwArds honorAWArds h Overflow Controls for New Jersey Gold Coast, Hoboken, N.J. CH2M HILL—Parsippany, N.J. Groundbreaking engineering is eliminating a trash and debris problem from sewer overflows that has plagued new luxury and recreational development along New Jersey’s Gold Coast. The project team’s patented screening technology was utilized on 11 sewer system components to eliminate the discharge of debris from the overflows. The components include seven screening facilities, two pressurized vortex separation facilities, two consolidation conduits and other related projects for the 150-yearold system. The result significantly improves water quality along the waterfront without compromising the aesthetic appeal of the riverfront’s revitalization. h Frederick Douglass-Susan B. Anthony Memorial Bridge, Rochester, N.Y. Erdman Anthony—Rochester, N.Y. The new Frederick Douglass-Susan B. Anthony Memorial Bridge provides a majestic landmark to a rapidly developing downtown Rochester skyline. The new bridge replaces a deteriorating structure with the first true arch bridge in the U.S. It carries I-490 over the Genesee River and several downtown streets, and features a three-rib arch span with 12 braces and a fanned cable arrangement. A new pedestrian walkway is cantilevered over the river, offering sweeping downtown views and connecting to an existing promenade. The design is enhanced with a subtle lighting that illuminates the arch and cables from the ground up, creating a soft glow that also illumines both the pedestrian walkway and the driving experience. h h Penobscot Narrows Bridge & Observatory, Waldo/Hancock Counties, Maine FIGG—Denver, Colo. Maine’s first cable-stayed bridge replaces a 75-year-old regional landmark with an eye-catching structure featuring both stateof-the-art cable technology and the world’s tallest public bridge observatory. The project team designed an advanced cable-stay cradle system to simplify long-term maintenance, and a pressurized nitrogen gas system around the stays to inhibit corrosion. The 1,161-foot main span also contains the world’s first installation of a strand monitoring system that allows easy and inexpensive force load inspection of the individual cable stays. During its first season of operation, the 420-foot-high observatory attracted more than 72,000 visitors. 30 ENGINEERING INC. MAY / JUNE 2008 Gozzer Ranch Wastewater Treatment System, Coeur d’Alene, Idaho Welch Comer & Associates— Coeur d’Alene, Idaho The proposed 350-lot luxury Gozzer Ranch Golf Course development now has a stateof-the-art wastewater treatment facility despite having no access to a municipal system. The project team designed an effluent reuse system around a filter membrane bioreactor—the first such reuse permit issued by the state—which treats up to 130,000 gallons per day. No chemicals are used in the treatment process and the effluent is converted into irrigation and landscaping water for the golf course. Activated carbon scrubbers protect the surrounding area from odors. An existing community drainfield also was taken out of service to eliminate a major potential environmental hazard.

Engineering Inc. - May/June 2008

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