23 Avenue/Gateway Boulevard Interchange (Edmonton)
The City of Edmonton retained Team ISL, led by ISL, in March 2004 to provide concept plan review, preliminary and detailed design, construction monitoring and contract administration services for this complex interchange along the south entry corridor to the City. Team ISL is a consortium of local firms (transportation, structural and geotechnical) who have successfully partnered to deliver major transportation projects.
The project consists of a split diamond interchange with 23 Avenue overpassing the existing Gateway Boulevard/Calgary Trail roadways, and the CPR railway (four bridges in total); and a partial interchange at 19 Avenue to provide a second access from Gateway Boulevard/Calgary Trail to the South Edmonton Common commercial development (the SB connection from Calgary Trail to 19 Avenue is grade separated). Extensive retaining wall systems are used to avoid encroachment on the existing adjacent land uses including the railway. Numerous pipeline relocations are required to eliminate conflicts between the interchange and a major pipeline corridor (12 pipelines). A large diameter (3m) storm tunnel provides stormwater storage and conveyance for the project. The estimated capital cost for the project is in excess of $125 Million.
Project challenges included heavy traffic volumes, construction staging and detouring, road safety audit issues, aging high pressure pipelines, CP Rail negotiations, confined right-of-way, interchange aesthetics, and a variety of existing land uses (residential, industrial, commercial) with conflicting interests. Project management functions were advanced through the use of Partnering Sessions (design and construction), a Value Engineering Workshop, Traffic Safety Audit, public consultation including Open Houses, and a Risk Assessment Program.
Visit the project website (hosted and maintained by ISL) for more information: http://www.23avenue.com
23 Avenue Interchange Animation - prepared by ISL Engineering and Land Services Ltd.
Location: Edmonton, Alberta, Canada
Completion: 2009 (Estimated)
Contributing ISL Disciplines:
- Urban Roadway Engineering
- Structural Engineering
- Municipal Engineering
- Landscape Architecture
- Communications
ISL has been named to The Green 30 list, published by Maclean's and Canadian Business magazine as part of their "Green Guide", in recognition of Earth Day. The Green 30 list is compiled by Hewitt Associates and based on input from employees at hundreds of companies that have taken part in the 2010 Best Small and Medium Employers in Canada studies.
This list identifies 30 organizations that are making efforts to mitigate environmental damage by reducing pollution and waste, and by fostering sustainable healthy growth.
Read the Official Press Release here.
Read the ISL Press Release here.
ISL Engineering and Land Services (ISL) is pleased to be named #2 among the Top 50 Best Small and Medium Employers in Canada, based exclusively on input from our employees. This prestigious ranking is a testament to ISL's commitment to sharing our success with our extraordinary employees, and continuing to work together to provide value and service to our clients.
Read our full press release here.
The results of this prestigious study, now in its sixth year, are published in the Globe and Mail. Click here for more information
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