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Interchange 21, Maryland
Interchange 21 is a crossing located in Baltimore County, MD at N39.39011° W76.72219° (NAD83) and at an elevation of 521 ft MSL.
It can be seen on the USGS 1:24K topographic map Cockeysville, MD.
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Here are some other places near Interchange 21 that may be of interest:
Note: Coordinates in the location and feature list above are referenced to NAD83 datum.