As part of our comprehensive transportation services, Dewberry has been providing bridge engineering services for 50 years. These services range from bridge inspections through bridge design and rehabilitation, and construction services for municipal, state and railroad clients. From simple culverts to complex interchanges and long span bridges, Dewberry’s innovative designs utilize the full spectrum of modern construction techniques and materials. This has resulted in the construction of structures with steel trusses, curved beams, box beams, precast/prestressed concrete, timber, and fiber-reinforced polymer spans, with unique architectural treatments and other features. |
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| | Cross Bay Bridge Rehabilitation
Jamaica Bay, New York
Dewberry was tasked with this $58-million deck and drainage rehabilitation project which included the six-lane, plus sidewalk, main bridge, with 17 spans. The south end of the bridge splits into five ramps with a total of 43 spans, most of which are over water. The project included the superstructure, consisting of precast "T" girders with post-tensioned tendons. Dewberry's engineer's estimate was within three percent of the low bid. |
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| | Rehabilitation of Nurse Helen Fairchild Memorial Bridge
Northumberland/Union Counties, Pennsylvania
Dewberry's design of this nine-span, open-spandrel reinforced concrete arch bridge carrying State Route 1014, Section 004 over the West Branch of the Susquehanna River included reconstruction spandrel columns, deck, and barries with architectural details to retain the aesthetic appearance of the historic landmark structure. Vacuum epoxy injection, an innovative repair method, was incorporated to ensure that the arch barrels could be effectively repaired once the deck was removed and the full extent of the deterioration was exposed. This project received a 2006 Pennsylvania Historic Preservation Award from Preservation Pennsylvania, Inc., in partnership with the Pennsylvania Historical & Museum Commission. |
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| | Chaplain Washington Memorial Passaic River Bridge
Kearny/Newark, New Jersey
Dewberry's $98-million deck reconstruction and seismic retrofit provided structural, drainage, lighting, and roadway improvements to the 1.3-mile-long easterly bridge on the New Jersey Turnpike. The incremental lowering of the superstructure, under traffic and over 12 spans, gained four feet of additional vertical clearance under the Pulaski Skyway allowing for wider shoulders. This saved $10-million off the subsequent redecking project by reducing the number of traffic stages and shaving nine months from the schedule. |
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| | Riverside South Infrastructure Resident Engineering & Inspection
New York, New York
Dewberry is providing engineering and inspection services for this $100-million, multiple and simultaneous bridge, tunnel, and relieving platform construction with associated water main, storm and sanitary sewers, and gas and electrical facilities for a major development project from W 61st Street to W 72nd Street. |
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| | Lawton Road Bridge Replacement Over Moorman Creek
Town of Clarkson, New York
Dewberry provided survey and mapping, preliminary and final design, and construction phase services for this two-lane rural road bridge that was replaced with a three-sided precast concrete structure. Dewberry is an expert in New York State pass through project delivery. |
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| | Replacement of the North Porchuck Road Bridge
Greenwich, Connecticut
In order to preserve the current appearance of the bridge, Dewberry designed a precast concrete arch with a stone facade to replace the original North Porchuck Road Bridge. ConnDOT used this photo as the cover of their local bridge manual. |
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| | Cyrus Avery Centennial Plaza,Route 66 Enhancement Project
City of Tulsa, Oklahoma
As a part of the master plan for Route 66 to turn the 26 miles of this historic transportation icon in Tulsa County into a tourist destination, PSA-Dewberry provided architectural and engineering services for the Cyrus Avery Plaza. The completed project, which serves as a Route 66 gateway to downtown Tulsa, features a pedestrian sky bridge from the parking area to a plaza at the east end of the Avery Bridge. The west end of the sky bridge also includes an observation platform for viewing the original historic bridge structure. |
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| | Bridge Over Goose Creek
Loudoun County, Virginia
Dewberry provided the engineering for 36 bridges along the Dulles Greenway, a 14-mile limited-access freeway extension of the Dulles Toll Road. The most significant bridge is the 660-foot span across the Goose Creek Reservoir. |
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| | Knapps Bridge
Bradford County, Pennsylvania
Dewberry worked with the Pennsylvania Department of Transportation to preserve both the utility and cultural integrity of seven historic covered arch bridges, including the 89-foot-long Knapps Bridge. Dewberry's services included inspections, environmental studies, and complete structural rehabilitation design. |
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| | Route 3A (Morrissey Boulevard) over Neponset River
Boston and Quincy, Massachusetts
Dewberry provided rehabilitation services for this $20-million, 2,320-foot-long by 100-foot-wide bridge that carries Route 3A (Morrissey Boulevard) over the Neponset River. The bridge consists of 23 spans of reinforced concrete deck, carrying three lanes in each direction, and cast-in-place piers and abutments. Rehabilitation included retaining walls, superstructures, design of ADA and retrofit modifications, and complete reconstruction of deteriorated hammerhead pier caps and seismic retrofit with isolation bearings.
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