Aqueduct Stabilization, Schoharie Crossing State Historic Site
Vertical Construction Inspection & Management
Fort Hunter, Montgomery County, New York
The Schoharie Crossing Aqueduct was constructed in the 1840’s to carry the expanded Erie Canal over the Schoharie Creek. This major engineering project mitigated waterway issues caused by flooding and the unpredictability of the Schoharie Creek, and kept traffic flowing on the canal. With time and neglect, the aqueduct’s structure deteriorated to the point where sections collapsed and past attempts at stabilization failed. The current stabilization project is intended to preserve and secure the remaining portion of the aqueduct, an important engineering achievement, which had a significant impact in New York State history.
Prudent Engineering, LLP, as subconsultant is providing Construction Management and Inspection Services via an Office Engineer for the duration of this construction project. The project entails closure of a section of the State Historic site, including the parking lot; construction of an access road for heavy equipment and machinery, and creation of a crane deployment area; and temporary erosion control and wetlands protection with bio-fiber rolls. The major stabilization work is being performed on Arch 6 of the aqueduct including installing temporary shoring and a temporary “Otis Stone” sling; excavating and installing micro-piles; and excavating, forming and pouring footings over the micro-piles and in areas adjacent to Pier 6 in order to create a substantial structural reinforcement to the pier. Additional tasks include masonry repointing and joint repair on the aqueduct’s stonework, and installing scour protection under Arch 5 and the north side of pier 6. Tasks such as removal of the temporary shoring, the “Otis Stone” sling, the temporary access road, and erosion control devices will take place as the equipment is removed and the project nears completion. The final phase of the project will be to restore the access road to a lawn area, complete project clean-up, and reopen the parking lot to the public. It is anticipated that the project will be completed in 2023.