Colorado Demonstration Project: I-70 Tower Road to Colfax Avenue GRS-IBS Bridge Replacement Project
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Colorado Demonstration Project: I-70 Tower Road to Colfax Avenue GRS-IBS Bridge Replacement Project



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Details:

  • Creators:
    Lee, Hyung Suk
  • Corporate Creators:
    Applied Research Associates, Inc.
  • Corporate Contributors:
    United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure
  • Subject/TRT Terms:
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    United States;Colorado
  • Edition:
    Final Report
  • Corporate Publisher:
    United States. Federal Highway Administration
  • Abstract:
    As a part of the Highways for LIFE initiative, the Federal Highway Administration provided a $2,000,000 grant in support of the Colorado Department of Transportation effort to replace two structurally deficient bridges on I-70 over Smith Road and Union Pacific Railroad. The existing bridges were on a horizontal and vertical curve and consist of welded steel girders with a cast-in-place concrete deck. Each bridge had an out-to-out width of 43.0 feet and accommodated two lanes with 8- foot shoulders on either side. This project involved removing the two bridge structures and replacing them with wider (60-foot) structures. The key innovation on the project was the use of geosynthetic reinforced soil-integrated bridge system (GRS-IBS) for the construction of the bridge abutments. This is the first project in the nation to utilize the GRS-IBS technology on a multi-span, high-speed interstate roadway. Phase 1 of the construction, which involved the replacement of the westbound bridge, is completed. Phase 2 is underway. The westbound bridge is performing very well, with no settlement observed to date. With the experience gained during Phase 1, it is anticipated that the second phase of construction in the eastbound direction will be carried out more efficiently
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
  • Download URL:
  • File Type:
    Filetype[PDF-2.51 MB]

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