In the early morning hours of Sept. 25, 2013, Pier 22 of the Interstate Highway 43 Leo Frigo Memorial Bridge sank about 2 feet, causing a 400-foot sag across all 4 lanes of the bridge. OMNNI Associates was contacted by the Wisconsin Department of Transportation to be part of the team to investigate the unexpected settlement and stayed involved with the project through the repair phase. OMNNI’s expertise included providing geotechnical and materials testing, as well as water sampling and testing.
Extensive coordination with WisDOT and the project team was required to ensure continuity and understanding of documented and reported information. Coordination efforts included frequent project meetings, constant communication with project leaders due to the required flexible nature of the project schedule, as well as a detailed and extensive quality control process in conjunction with the project team. OMNNI generated digital soil logs, soil profiles and test results for use in the final report, as well as aided in the initial site review, trend identification and site analysis.
Because of the accelerated schedule during the repair phase of the project, the contractor worked seven days per week and, at times, around the clock in unseasonably cold weather from Nov. 1, 2013 through Jan. 3, 2014, with Christmas Eve and Christmas Day being the only days that crews didn’t work. OMNNI personnel worked nights, weekends and holidays to provide field services during this phase and worked closely with WisDOT’s consultant project management and the contractor’s quality control personnel to schedule testing, collect material certifications and track material quantities as they were delivered to the project.
“OMNNI was able to run with the work given. They ended up using extraordinary forces to complete the work. They stepped up to the plate and excelled at their work…The consultant provided the appropriate technical skills without much direction. They had the knowledge of what needed to be done and were able to jump right in and perform the required work.”
Excerpted from a WisDOT Consultant Performance Evaluation