SR 0322, Section 001 – 28th Division Highway
Client: PennDOT, Engineering District 8-0
Location: York County, PA
Type/Size: One 3-Span and Two Single Span Rural Bridge Replacements
Services: Structural Engineering
PCS designed significant improvements to the roadway and structure carrying the Twenty-Eighth Division Highway (SR 0322) over the Conestoga River, which included the intersection at Martindale Road (SR 1010). The 0.5 mile long project is located on an increasingly heavily traveled section of highway in Hinkletown, PA bordering Ephrata and Earl Townships in Lancaster County. The structural design included replacement of an existing substandard and deteriorated 300′ long 4-span steel I-beam bridge with a new 3-span reinforced prestressed concrete spread box beam bridge. To maintain traffic during construction, the bridge design included a two-stage construction scheme. The new bridge features a dedicated right turn lane for movements onto Martindale Road.
Both SR 0322 and the adjacent portion of Martindale Road were improved to eliminate substandard intersection and roadway geometry and to correct inadequate drainage conditions. A new traffic signal was installed, along with the addition of a center lane for left turning movements from eastbound SR 0322.
The engineering design also provided for the staged removal of an existing concrete dam on the Conestoga River and an abandoned, historic four-story stone gristmill, with connecting millrace, to avoid adversely affecting the river environment. An archaeological site was discovered within the project limits, which prompted the design of a concrete retaining wall, extending from the bridge parapet wall, to avoid conflicts and mitigation.
The Finished Structure
Upstream, Looking East