Utah Demonstration Project: Geosynthetic Reinforced Soil Integrated Bridge System on I-84 near Salt Lake City

As part of a national initiative sponsored by the Federal Highway Administration (FHWA) under the Highways for LIFE program, the Utah Department of Transportation (UDOT) was awarded a $1 million grant to demonstrate the use of proven, innovative accelerated bridge construction technologies to deliver this $5 million project in substantially less time than conventional construction. The project involved replacing twin bridges located on the westbound and eastbound routes of I-84 over Echo Frontage Road in Summit County. The structure to be replaced was constructed in 1971 and carried a designation of D-783 in UDOT’s bridge management system. The project limits extended approximately between milepost 118 and milepost 120. The innovative construction techniques adopted were as follows: Use of the geosynthetic reinforced soil-integrated bridge system (GRS-IBS) method of design and construction; Use of prefabricated bridge elements and systems (PBES); and Use of a lateral bridge slide. This was the first GRS-IBS project in Utah and also the first GRS-IBS project on an interstate in the U.S. It was also the first GRS-IBS project in the U.S. to incorporate a lateral bridge slide. On this project, UDOT used a price + time or price + time + lane rental bidding process. To estimate the cost savings for the GRS-IBS method, the total costs were computed for both the as-built and baseline (cast-in-place) scenarios by adding the agency costs and user costs (delay + safety costs). The results indicated around 7 percent cost savings during the as-built scenario compared to the baseline because of significantly reduced user costs.

• Record URL:
  http://www.fhwa.dot.gov/hfl/summary/pdf_2/UT_I-84_GRS-IBS_%20Revised_Final.pdf
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/54207
• Corporate Authors:

  Applied Research Associates, Incorporated

  100 Trade Centre Drive, Suite 200
  Champaign, IL  United States  61820

  Federal Highway Administration

  Office of Infrastructure
  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Raghunathan, Deepak
  • Sadasivam, Suri
  • Mallela, Jagannath
• Publication Date: 2014-2

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Draft Report
• Features: Appendices; Figures; Maps; Photos; References; Tables;
• Pagination: 80p

Subject/Index Terms

• TRT Terms: Bridge construction; Cost effectiveness; Demonstration projects; Economic analysis; Geosynthetics; Mechanically stabilized earth; Prefabricated bridges; Technological innovations
• Identifier Terms: Highways for LIFE
• Uncontrolled Terms: Bridge replacement; Lateral bridge slide
• Geographic Terms: Summit County (Utah)
• Subject Areas: Bridges and other structures; Construction; Highways; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01580341
• Record Type: Publication
• Files: NTL, TRIS, ATRI, USDOT
• Created Date: Nov 4 2015 2:30PM