Culvert Outfall Repair Design. Xxxx Xxxxxx will work with the County on the repair design for the culvert outfall on the northwest side of the Xxxxxxx Creek Bridge. The outfall structure has failed, and bank erosion has continued over the past several years. The County is working with another consultant on the preliminary design for this repair and coordination is needed to verify the bridge design is not in conflict with the culvert outfall repair.