Chief Peguis Trail Extension - Rothesay Street Overpass: Rapid Design and Construction of an Integral Abutment Bridge with MSE Walls and Cellular Concrete Backfill
The Rothesay Street Overpass is one component of a significant Public Private Partnership (P3) project, the Chief Peguis Trail (CPT) Extension, in Winnipeg, Manitoba. Due to changes in the P3 Contractor's design/construction team, the overpass subcontractor was required to hire a design engineer for the Rothesay Street Overpass, and had less than one year to complete the design and construction of the structure. In the preliminary stages of the CPT project it was decided to raise the overpass 3 m from the original at-grade design in order to eliminate a costly lift station that would have been required for land drainage with a 6 m deep underpass. The overpass is in a congested urban/residential location, and raising the structure required the addition of narrow approach embankments over poor soil conditions between residential housing. Due to the compressed schedule, Mechanically Stabilized Earth (MSE) retaining walls were selected to create the narrow approach embankments, abutment backwalls, and grade changes required to fit the structure into the project's right-of-way. To compensate for the poor underlying soils and high anticipated settlement, lightweight cellular concrete backfill, up to 5 m in depth, was required. The use of cellular concrete around integral abutments provided unique challenges, and innovative details were developed to allow performance of the integral abutments in a relatively rigid backfill. Preliminary design through to construction completion and overpass opening on December 1, 2011, took approximately 11 months, and the design and construction was completed on budget and on schedule. For the covering abstrac of this conference see ITRD number 201211RT334E.
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Corporate Authors:
Transportation Association of Canada (TAC)
401-1111 Prince of Wales Drive
Ottawa, Ontario Canada -
Authors:
- LOEWEN, EB
- BARIL, M
- ERIC, R
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Conference:
- 2012 CONFERENCE AND EXHIBITION OF THE TRANSPORTATION ASSOCIATION OF CANADA - TRANSPORTATION: INNOVATIONS AND OPPORTUNITIES
- Location: Fredericton New Brunswick, Canada
- Date: 2012-10-14 to 2012-10-17
- Publication Date: 2012
Language
- English
Media Info
- Pagination: 19 p.
- Monograph Title: 2012 Conference and Exhibition of the Transportation Association of Canada - Transportation: Innovations and Opportunities
Subject/Index Terms
- TRT Terms: Access roads; Case studies; Conferences; Construction; Design; Embankments; Public private partnerships; Soil stabilization
- Uncontrolled Terms: Quick
- Geographic Terms: Canada
- ITRD Terms: 435: Access road; 8018: Canada; 8531: Case study; 8525: Conference; 3655: Construction; 9011: Design (overall design); 2801: Embankment; INTEGRATED BRIDGE; 172: Public private partnership; 9064: Quick; 3689: Soil stabilization
- Subject Areas: Construction; Design; Geotechnology; Highways; I10: Economics and Administration; I24: Design of Bridges and Retaining Walls; I53: Construction of Bridges and Retaining Walls;
Filing Info
- Accession Number: 01480554
- Record Type: Publication
- Source Agency: Transportation Association of Canada (TAC)
- Files: ITRD, TAC
- Created Date: May 1 2013 1:19PM