The 4th Corso viaduct was closed in 2015 due to deterioration and structural deficiencies, ultimately requiring a full replacement. We removed the existing bridge and replaced it with a new 570-foot four span NU girder bridge. An additional 600 feet of paving and sidewalk at each end was also completed. Weather was a constant challenge, along with a tight site area, which made safety protocols and delivery scheduling that much more important.