Project Detail
Project Name
St. Peter Rondo Tunnel Repairs Phases II and III
Client
City of St. Paul Department of Public Works
Project Description
Large diameter concrete storm tunnel repairs. Dewatering, reinforced shotcrete liner, cement grouting, crack sealing, steel strap installation, concrete repair.
Dates on Site
November 2007 to Dec 2009
Environmental Controls
Confined Space Entry, Ventilation
Specified Materials
Polyurethane resin grout, 3:1 portland:fly ash cement grout
Problem to Solve
Existing cracks in concrete storm tunnel were allowing ground water to infiltrate and carry in sand from behind liner causing voids. These voids allowed the concrete liner to break apart when the system pressurized under full flow conditions.
Work Scope
Crack Sealing, Cement Grouting Voids Behind Liner, Stainless Steel Strap Installation, Concrete Repair, Drop Structure Modifications
Contact Us
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Competitive Advantages
- High bonding capacity of $90 million
- Exceptional safety record with numerous safety awards
- A history of timely project completions
- Focus on partnering with owners and engineers
- Excelling with unique and difficult projects
- Rare capabilities
- Key equipment management
- Qualified applicator scheduling
- Fairly priced
- Emphasizing quality and value
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