Grand Lake Dam Bridge Rehab
Self-perform work consists of 2,500 SF of full depth repairs, 5,000 SF of partial depth deck repairs and 3,800 SF of overhead concrete repairs. All horizontal and overhead concrete repair demolition was completed by hydrodemolition methods, using our high pressure pumps and robots to demo the delaminated and deteriorated concrete. The overhead repairs were completed by using shotcrete as the placement method. Also completed by using hand chipping methods was 800 SF of concrete beam, column and wall repairs.
All structural concrete had Corrosion Inhibitor Treatment (CIT) applied to the top side and bottom side surfaces. Instead of replacing the asphalt wearing surface with a new asphalt wearing surface over the structural deck, a waterproofing concrete overlay will be installed, using a low permeable, high density Latex Modified Concrete material.
Steel repairs consisted of welded web plates and stiffeners and sectional column replacements which required the use of temporary load bearing shoring. A new trash lift was retro-fitted, and the upper parking mezzanine was upgrade with a new traffic bearing waterproofing membrane, CMU wall repairs and new steel stairs.