Riverwalk Brewing Expands Contract Brewing Capacity, Packaging Capabilities, and Lab Services for 2025. Newburyport, MA – October 17, 2024 – Riverwalk Brewing is pleased to announce a significant expansion of its contract brewing operations, positioning the company for continued growth in 2025. Over the past year, Riverwalk has increased its cellar capacity and introduced advanced packaging equipment, allowing for production in multiple formats, including 4, 6, and 12-pack boxes.