Avila and Associates was retained to provide bridge hydraulic services, including estimating discharge design water surface elevation, velocity and bridge scour, for the North State Street Bridge over Ackerman Creek in Mendocino County. The project required us to evaluate two different options: rehabilitating or replacing the existing bridge. It also involved replacement of a tall fish ladder (approximately 8-ft high) downstream of the bridge, and the potential headcut caused by channel bed degradation. Avila and Associates is a subconsultant to Quincy Engineering, Inc. for this project, which is currently on schedule and within the allocated budget.
