Morris Street Bridge over the White River is located south of downtown Indianapolis and was originally constructed in 1928, spanning 652.7 feet. After review of the bridge's structural condition it was deemed that the deck and superstructure were in insufficient condition to carry the current vehicular traffic load. In order to preserve the historical characteristics of the structure, the Indianapolis Department of Public Works initiated the project to remove and replace all of the vertical supports, deck beams, and superstructure, while also repairing and preserving the original arch spans constructed in 1928.
Beaty Construction Inc. subcontracted RAM Construction Services to perform all of the arch ring preservation work items. The first step was to identify and remove all of the deteriorated concrete present on the substructure, which totaled 18,130 sq. ft. In order to expedite the challenging schedule, RAM Construction Services chose shotcrete as the repair mortar to reduce the down time experienced during traditional formwork installation. Additionally, shotcrete also achieved structural strength in a fraction of the time that conventional form and pour operations would have required. A total of 3,050 galvanic anodes were placed within the repaired areas to reduce the effects of any future deterioration of the reinforcing steel.
To further increase the load capability and life of the existing arch rings, 62,000 sq. ft. of externally bonded glass fiber wrap system was installed on the surface. During the restoration of the arch rings, RAM Construction Services worked closely with the prime contractor and others to allow for the construction of the new super structure and an 18" high-pressure steam line which was to remain in service at all times.
- Removal of deteriorated concrete
- Galvanic corrosion protection
- Shotcrete repair
- Fiber wrap encasement