This project was funded by the Ohio Department of Transportation and focused on the evaluation and selection of screens for filtering trash and debris from stormwater inlets along urban highways. A 1:1 laboratory model was constructed to evaluate the hydraulic efficiency of the barrier inlet screens for a range of roadway slopes. Screens were tested at typical and extreme flows. Debris was introduced to evaluate the ability of each screen to filter large debris and resist clogging. Several commercially available screens were tested along with novel designs. The screens were evaluated and ranked based on performance factors including hydraulic efficiency, clogging resistance, ease of installation, duration between cleaning, and risk of damage.
