Iowa Demonstration Project: Accelerated Bridge Construction on US 6 over Keg Creek

Littleton, Paul; Mallela, Jagannath; Applied Research Associates, Inc.

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Iowa Demonstration Project: Accelerated Bridge Construction on US 6 over Keg Creek

2013-06-01
By Littleton, Paul ; Mallela, Jagannath

[PDF-2.36 MB]

English

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Details:

Creators:

Littleton, Paul ; Mallela, Jagannath

Littleton, Paul ; Mallela, Jagannath Less -
Corporate Creators:

Applied Research Associates, Inc.
Contributors:

Lord, Byron ; Huie, Mary

Lord, Byron ; Huie, Mary Less -
Corporate Contributors:

United States. Federal Highway Administration. Office of Infrastructure
Subject/TRT Terms:

[+]

Backfilling Bridge Construction Economic Analysis High Performance Concrete Prefabricated Bridges Self Compacting Concrete Technological Innovations
Resource Type:

Tech Report
Geographical Coverage:

United States ; Iowa

United States ; Iowa Less -
Edition:

Final Report
Corporate Publisher:

United States. Federal Highway Administration
Abstract:

As part of a national initiative sponsored by the Federal Highway Administration (FHWA) under the Highways for LIFE program, the Iowa Department of Transportation (DOT) was awarded a $400,000 grant to demonstrate the use of proven, innovative accelerated bridge construction (ABC) technologies to deliver this $2.7 million project in less time than conventional construction. This project represents a cooperative effort among the FHWA, Iowa DOT, and the Strategic Highway Research Program (SHRP 2) project R04 research team to demonstrate the latest advances in ABC methods. This report details the ABC innovations used to replace the US 6 bridge over Keg Creek featuring prefabricated superstructure and substructure systems, high- and ultra-high-performance concrete, self-consolidating concrete, and fully contained flooded backfill. The new bridge was completely prefabricated off-site and installed into place—a first in Iowa and in the United States. The ABC approach and innovations in this project increased safety, enhanced quality, and allowed the contractor to replace the bridge during a 16-day road closure instead of 6 months, as would have been required under traditional construction methods. Using prefabricated bridge systems and innovative materials nearly doubled the initial bridge construction cost compared to traditional construction. However, a comprehensive economic analysis including user cost savings shows that the project saved road users about $0.44 million (or about 29 percent less than conventional construction). The experience gained on this successful project will help the Iowa DOT implement these innovations more routinely on future projects
Format:

PDF
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:9d72e81f3054db3a19b6d3aded2db2cd1ec9ff0bc719dd1ac9207716ad3ff7eb
Download URL:

https://rosap.ntl.bts.gov/view/dot/54259/dot_54259_DS1.pdf
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Iowa Demonstration Project: Accelerated Bridge Construction on US 6 over Keg Creek

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