{"@context":"https://schema.org","@type":"Place","additionalType":"https://schema.org/Port","name":"Alpena","identifier":"US APN","unlocode":"US APN","city":null,"country":"United States","waterBody":"Lake Huron; Great Lakes","harborSize":"Small","harborType":"Coastal (Natural)","channelDepthMeters":6.4,"confidenceLevel":null,"coordinates":{"latitude":45.066667,"longitude":-83.416667},"description":"Up to 2.7 million tonnes of cement a year make Alpena (US APN) on Lake Huron one of North America's largest cement sites; the plant — now branded Amrize after Holcim/Lafarge spun off its North American arm in 2025 — draws on a vast adjacent limestone quarry. The port is firmly a dry-bulk operation, shipping Portland cement and limestone aboard self-unloading Great Lakes freighters, or lakers, to customers across the Great Lakes states. In 2021 the operator won a USD 3.7 million federal grant to ","url":"https://www.freight-academy.com/en/information/seaports/alpena-port-us-apn","markdownMirror":"https://www.freight-academy.com/api/md/seaports/en/alpena-port-us-apn","source":null,"provider":{"@type":"Organization","name":"Freight Academy","url":"https://www.freight-academy.com"},"quickSummary":"Alpena · (UN/LOCODE: US APN) · United States · Small · 6.4 m"}