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Mid-America Transportation Center

NDOR Create Database for MSE Walls


Researchers

  • Principal Investigator: Wayne Jensen (wjensen2@unl.edu (402)472-3738)
  • Project Status
    In Progress
    Sponsors & Partners
  • Nebraska Department of Roads
  • About this Project
    Brief Project Description & Background
    MSE walls have been used by NDOR for 15+ years in bridge abutments and to retain slopes along narrow right-of-ways. MSE technology is well established, but an inventory and database of the NDOR’s MSE walls should be established to provide insight into possible maintenance requirements and to evaluate long-term performance of these structures. An inspection program should also be developed to provide advanced warning of potential problems with these structures as they age.
    Research Objective
    The objective of Phase I of this research is to provide the NDOR with a database of MSE walls that have been constructed within their right-of-ways, complete with the design and construction parameters of each wall. The database will include suggested inspection and maintenance alternatives and list possible strategies to evaluate long-term performance of these structures.
    Potential Benefits
    This database will provide for NDOR suggested inspection and maintenance alternatives and list possible strategies to evaluate long-term performance of MSE walls.
    Abstract
    Mechanically-stabilized earth (MSE) walls have been used by the Nebraska Department of Roads (NDOR) for 15+ years in bridge abutments and to retain slopes along narrow right-of-ways. MSE technology is well established, but an inventory and database of the NDOR’s MSE walls should be established to provide insight into possible maintenance requirements and to evaluate long-term performance of these structures. An inspection program should also be developed to provide advanced warning of potential problems with these structures as they age. Phase I of the proposed research study will complete these tasks. Potential exists for follow-on research (Phase II) of this project. Phase I research should be completed first to determine whether a problem exists and the extent of the problem. No funding has been or will be requested for Phase II research this year, but it will be pursued in the future. The database will include suggested inspection and maintenance alternatives and list possible strategies to evaluate long-term performance of these structures. Phase II will investigate the problem of walls constructed with select backfill that may not or does not meet design specifications with regard to internal angle of friction. Researchers will evaluate each wall where a problem exists and attempt to determine the effect on wall stability and life that will result from construction with granular backfill that does not meet design specifications.
    Project Amount
    $ 38,594