U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Iowa Demonstration Project: Massena IA-92 Bridge Replacement Project

File Language:
English


Select the Download button to view the document
Please click the download button to view the document.

Details

  • Creators:
  • 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;Iowa
  • Edition:
    Final Report
  • Corporate Publisher:
    United States. Federal Highway Administration
  • Abstract:
    As part of a national initiative sponsored by the Federal Highway Administration 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 technologies, including lateral bridge slide and prefabricated bridge element systems (PBES), to deliver this $2.0 million project in less time and with less impact to motorists than conventional construction. The project consisted of replacing the Iowa Highway 92 bridge (Maint. No 1563.4S092) over a small natural stream, 1 mile west of Iowa Highway 148. The replacement bridge was designed to increase the structural capacity of the bridge, improve roadway conditions, and enhance user safety by providing a wider bridge and approaching roadway. This project focused on implementation of an accelerated bridge construction (ABC) policy and first-time use of the demonstrated innovative construction methods. This was the first lateral bridge slide project in the State of Iowa. The project was let on April 16, 2013 using a design-bid-build contract, and the winning bid amount was $1.3 million. The project involved three phases: 1) construction of the bridge structure off-alignment, 2) the bridge slide-in, and 3) revetment, grading, and clean-up. The replacement structure was a single-span 120-foot by 44-foot bridge with cast-in-place abutment footings, precast wingwalls, and a precast superstructure fabricated adjacent to the existing bridge and moved into position by lateral slide. The ABC approach resulted in a full closure of 9 days with no incentives or disincentives awarded to the contractor at the end of this project. A 12.89 mile detour was utilized during the full closure, thus resulting in an out-ofdistance mileage of 6.89 miles. To estimate the cost savings for the ABC method, the total costs were computed for both the as-built bridge and a baseline (cast-in-place) scenario by adding the agency costs and user costs. The results indicated a cost savings of around 43 percent over the baseline scenario, mainly attributable to the significantly reduced user costs of the asbuilt project.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:fdbf69f49f2c333d36a407253ff1904884e230c79cef3f0dfcab913a757e7e35f1b1206a5a0746048fffb3e693e8585098b03d927cbdb81d11f501ff308125b5
  • Download URL:
  • File Type:
    Filetype[PDF - 10.51 MB ]
PREVIOUS
File Language:
English
ON THIS PAGE
Details
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP