WRITTEN BY Kevin Duggan, Fort Collins Coloradoan
The potential cost of expanding Halligan Reservoir northwest of Fort Collins continues to rise.
Fort Collins Utilities officials say the expected cost of the project, which would include raising the height of the reservoir’s dam 25 feet, has reached $120 million.
Chances are the final project cost will fall within a range of $100 million to $150 million, depending on the scope of the project and its schedule for approval and construction, officials say.
The most recent projected cost is up from a 2017 estimate of $75 million. The anticipated price tag for the project keeps changing as city officials learn more about the costs of going through county, state and federal permitting processes, acquiring land, performing environmental mitigation, and “evolving best practices in dam design and construction,” according to a news release.