A weighted decision matrix was created to best evaluate the effectiveness of alternatives based on key criteria. Key criteria were assigned varying weights based on team input. Hydraulic performance was given the highest weight and environmental/social impacts was given the lowest weight. Criteria were scored based on a range from 1 to 10 with its weight applied. A final weighted score was found and Alternative 1 was selected for its high weighted score of 7.2.

This is the detail drawing for the retention wall in the team's final design. The retention wall extends for the entirety of the side adjacent to the parking lot. Height of the retention wall will be 4 feet. This retention wall was installed to protect the parking lot subsoil. Locally sourced red brick will be used.

These are the detail drawings for the two existing culverts and how they would be improved. The top drawing is of the double barrel culvert that runs under Highway 89. The bottom drawing is of the single barrel culvert that runs under the National Park Service's parking lot.