The Challenge

  • Extend service life of 57-year-old suspension bridge
  • Emergency repairs initiated due to rusted gusset plates discovered

Geocomp worked with HAKS under contract to the Delaware River Port Authority to extend the service life of the 57 year old suspension bridge over the Delaware River in Philadelphia. Rusted gusset plates were discovered below the recently re-decked bridge structure during routine inspection. This prompted emergency repairs based on inspection and classification of the gusset plate deterioration. The repair schedule was built on classification importance from engineering calculations and verification through field instrumentation and data collection and evaluation.