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Office of Planning, Environment, & Realty (HEP)

The National Highway Planning Network

The National Highway Planning Network (NHPN) is a 1:100,000 scale network database that contains line features representing just over 450,000 miles of current and planned highways in the U.S. The NHPN consists of interstates, principal arterials, and rural minor arterials.

Updated: 9/20/2012
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