Remove the existing 45-fppt by 35-inch by 22-inch corrugated metal pipe arch culvert under Copper Avenue and replace with a 54-foot by 48-inch by 24-inch concrete box culvert. Cutoff walls and wingwalls would be constructed at both ends of the culvert. The upstream wingwall would measure 22-feet across and the downstream wingwall would measure 14-feet across. A 24-foot by 5-foot riprap erosion control apron would be installed on the downstream end of the culvert. Work will occur during low flow within the stream, and disturbed areas will be recontoured and revegetated where applicable.