Border infrastructure refers to the bridges, tunnels, ports of entry, and facilities at Canada's international borders, primarily with the United States. While border control is a federal responsibility, border crossings significantly impact nearby municipalities through traffic, economic activity, and development patterns. Major crossings like the Ambassador Bridge in Windsor or Peace Bridge in Fort Erie shape their communities. Federal decisions about customs processing, hours of operation, and new crossing construction affect local traffic, air quality, and economic development. Border municipalities advocate for infrastructure improvements and federal recognition of the disproportionate impacts they bear from serving national trade corridors.