| Title | Utah Demonstration Project: Geosynthetic Reinforced Soil Integrated Bridge System on I-84 near Salt Lake City |
|---|---|
| Record ID | 78964 |
| Personal Name Creator |
Raghunathan, Deepak; Sadasivam, Suri; Mallela, Jagannath |
| Personal Name Contributor |
Zirlin, Julie; Flom, Ewa |
| Corporate Creator | Applied Research Associates, Inc. |
| Corporate Contributor |
United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure |
| Publisher | United States. Federal Highway Administration |
| Publication Date | 20140201 |
| Language | English |
| Abstract | 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 milepost118 and milepost120. 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). • 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 (castin-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. |
| Rosap ID | dot:54207 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/54207 |
| TRT Terms | Demonstration projects; Geosynthetics; Soil stabilization; Lateral supports; Innovation |
| Geographical Coverage |
United States; Utah |
| TRIS Online Accession No |
1580341 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/78000/78900/78964/ut_grs-ibs_i84_saltlakecity.pdf |
| Format | |
| Database | NTL Digital Repository |