1. Big Conestoga #1 Bridge Replacement

    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…

  2. Elizabethtown Borough Bike/Pedestrian Pathway Extension

    Elizabethtown Borough wanted to complete the pathway network within the borough that was part of a phased planning, design, and construction project reflecting the Regional Official Map for Trails as part of the Regional Strategic Plan. This part of the project, following three previous phases, connects an existing pathway network around Elizabethtown College to the…

  3. Former Service Station Monitoring and Characterization

    RETTEW conducted a site characterization and remedial action of a former automobile service and fueling station property acquired by the Lehigh-Northampton Airport Authority (LNAA). Upon acquisition, historical regulatory obligations related to a past underground storage tank closure were identified. RETTEW conducted a comprehensive site characterization and assessment that included 13 monitoring wells, numerous soil borings,…

  4. Lehigh-Northampton Airport Authority Environmental Consulting Services

    Since 2015, RETTEW has provided Lehigh-Northampton Airport Authority (LNAA) and Lehigh Valley International Airport (ABE) with industrial National Pollutant Discharge Elimination System (NPDES) consulting, compliance, and permitting support. The initial project — to make the ABE stormwater program compliant with federal and state regulations with an approved NPDES PAG-03 General Permit for industrial stormwater discharge…

  5. SR 172 Perry Drive Intersection Improvements

    The intersection of SR 172 and Perry Drive was on Ohio’s Governors priority list of the top ten most dangerous intersections in the state and needed significant upgrades to increase safety for motorists. During construction, the prime engineer required the expertise of a subconsultant to develop signal timings for phases of temporary traffic conditions. Having…

  6. Nissley Drive Bridge Replacement

    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…

  7. Hatchery Road Over I-476

    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…

  8. Quarryville Borough Active Transportation Plan

    In 2021, Quarryville Borough received total grant funding of $20,000 through WalkWorks, a partnership between the Pennsylvania Department of Health and the Pennsylvania Downtown Center, and the Pennsylvania Department of Conservation and Natural Resources to develop an active transportation plan for the Borough. Active transportation is any self-propelled, human-powered mode of transportation, such as walking…

  9. Big Conestoga #9 Bridge Rehabilitation

    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…

  10. Big Conestoga #3 Bridge Rehabilitation

    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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Corporate News, Industry News

RETTEW to Host Preventing Falls in Construction Program on May 7

Join us for an informative and engaging event as part of OSHA’s 2024 National Safety Stand-Down. This hybrid gathering…

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Corporate News, Employee Update

New Transportation Market Lead at RETTEW

RETTEW is delighted to announce Dave Hoglund, regional Transportation Team Lead, will be taking over the role of…

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