Research Results

Investigation of Railroad Bridge Approach Problems along Heavy Haul Freight Lines

  • 12
  • May
  • 2015
AUTHOR: Federal Railroad Administration
KEYWORDS: INVESTIGATION OF RAILROAD BRIDGE APPROACH PROBLEMS ALONG HEAVY HAUL FREIGHT LINES; Track transition; bridge approach; differential movement; Multi-Depth deflectometer; MDD; strain gauge
ABSTRACT: Under a contract with the Federal Railroad Administration (FRA), the University of Illinois at Urbana Champaign (UIUC) is investigating different factors that contribute to the problem of differential movement at railroad track transitions The research objective is to develop new design and rehabilitation methods to mitigate the problem of differential movement at track transitions. In order to achieve this goal, UIUC researchers are using geotechnical instrumentation and performance monitoring equipment to quantify the contributions of different substructure layers to differential movement at railroad bridge approaches. As part of the study, UIUC instrumented two undergrade bridge approaches on Norfolk Southern Railway’s (NS) N-Line mainline near Ingleside, WV, to investigate the frequent deterioration in track geometry at these sites. This report provides a brief overview of the instrumentation activity, the data acquisition approach, and preliminary results.