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Replacing this twin-barrel arch bridge on a heavily traveled corridor posed significant challenges because of the limited crossings of the waterway and the need to maintain traffic flow. RETTEW designed a two-span replacement bridge on a curved alignment to address these issues. To ensure continuous traffic flow during construction, we implemented a staged construction approach…
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RETTEW worked with Lancaster County for more than a decade to prioritize rehabilitation and replacement of their structurally deficient bridges. The Big Conestoga #1 Bridge was the last remaining bridge replacement project, allowing the County to shift their focus to maintenance and preservation of these bridges. The original Big Conestoga #1 was a reinforced-concrete through…
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RETTEW performed the design of this $3.1 million overhead bridge project carrying Nissley Drive (renamed Baker Avenue as part of the project) over the turnpike mainline. We completed an alternative analysis to replace this rigid-frame structure with a two-span bridge and accommodate future widening of the mainline. In addition to the structure design, RETTEW developed…
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This was the pilot bridge replacement project for the Pennsylvania Turnpike Commission’s (PTC) Bridge Information Modeling (BIM) and Digital Delivery Program, which included developing a 3D model. The existing bridge was a single-span steel beam bridge, and we proposed a two-span composite prestressed spread box-beam bridge. This project was part of a $1.5 million open-end…
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RETTEW was selected by Lancaster County to provide bridge engineering as well as environmental and construction services for the rehabilitation and painting of Big Conestoga #9 Bridge on Rock Hill Road. Construction involved minor structural repairs to the masonry pier, steel handrail and stringers, and painting the entire superstructure. RETTEW specified an innovative Termarust© paint…
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As part of our Engineer of Record position with Lancaster County, RETTEW was responsible for rehabilitating this historically sensitive iron truss structure to address issues flagged in routine inspection reports. We provided services for roadway and bridge design; performed environmental due diligence; developed erosion and sediment control plans; and provided bid documents, construction administration, and…
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This existing 58-foot-long steel I-beam bridge in Cheltenham Township was structurally deficient and needed to be replaced because of excessive deterioration. In fact, throughout the course of designing the new bridge, numerous emergency repairs were needed to keep the bridge in service. The bridge is in a high-traffic area prone to flooding, so extra caution…
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Two small bridges in West Cocalico Township, one over Little Cocalico Creek and one over a tributary to Cocalico Creek, were deteriorating and needed repairs. Horseshoe Trail Road Bridge was previously closed because of collapsed abutments, and Mill Road Bridge was restricted by a steel plate over a portion of the failed deck. These failing…
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The SR 2047 (U.S. 219 Business) Bridge over Flaugherty Creek is a stone masonry arch bridge listed on Pennsylvania’s Historic Bridge Inventory, and was deemed structurally deficient after 100 years of wear and tear from exposure to the elements and heavy traffic volume. The bridge is one of the few stone masonry arch bridges in…
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Under National Bridge Inspection Standards, only bridges with spans greater than 20 feet are required to be inspected every two years. When South Middleton Township suspected an issue with a weight-restricted bridge spanning under 20 feet, they had no recent inspection on which to rely. RETTEW completed a bridge inspection for the Township and revealed…
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RETTEW NEWSROOM
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Tell us about a hobby you’re passionate about outside of work. I belong to a volunteer women’s service…
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One of RETTEW’s Project Managers, Melissa Kelly, is participating as a mentor in the Lancaster Chamber of Commerce…
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