Stony Run Bridge over Stony Run
PA Department of Conservation & Natural Resources (DCNR), Union County, PA
Stahl Sheaffer provided bridge design, hydrologic and hydraulic analysis, water obstruction and encroachment permitting, bid document preparation, and construction consultation for the replacement of an existing undersized concrete slab with a new single-span bridge. This project involved the use of accelerated bridge construction concepts with the use of Geosynthetic Reinforced Soil-Integrated Bridge System abutments (GRS-IBS). The use of GRS-IBS provides the benefit of accelerated construction and reduced costs, as they can be built with general construction equipment. Additionally, according to the FHWA, GRS-IBS abutments can save up to 60% in comparison to conventional bridge construction and can potentially require less overall maintenance. The final design included a 28’-0” span, 24’-2 ½” wide structure with an additional 8” of driving surface aggregate over the beams to provide a seamless from the roadway to the bridge deck. Additional tasks included hydrologic and hydraulic analysis; roadway design; plans preparation; cost estimate and technical specifications.
| dcnr_stony_run_bridge_over_stony_run.pdf |
Original Structure
|
Completed Bridge - 2021
|
Stahl Sheaffer implemented innovative Geosynthetic Reinforced Soil-Integrated Bridge System abutments (GRS-IBS) for this project.
Above: Stahl Sheaffer personnel, along with Matt Beaver, DCNR Bald Eagle State Forest, presented the GRS-IBS bridge concept to numerous DCNR, PAF&B, and PennDOT staff during the field view.
|
This bridge was featured in the December 2022 DCNR Design & Construction Journal (excerpt below).
| ||