Is Iron Mountain Road open right now?
Iron Mountain Road US 16A · South Dakota
Current status
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Iron Mountain Road on US 16A connects Keystone and Custer in South Dakota. The live status above comes from official DOT data and refreshes continuously through the day.
Pass Checker checks its own status against official DOT data every hour. See the live accuracy report.
The Pass Checker app adds summit temperatures from roadside weather stations, chain law and restriction details, and every other pass in South Dakota.