Categorical Exclusion Determination
Office of NEPA Policy and Compliance
May 3, 2017
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The road network at the Idaho National Laboratory (INL) Site is composed of approximately 120 miles of improved and 600 miles of unimproved roadways. Roads and parking lots at the INL Site show signs of rutting, potholing, and other deterioration. Deterioration of the road network at the INL Site has created safety hazards that have led to accidents and near misses. A 2014 assessment by the Idaho Transportation Department found the majority of primary roads at the INL site are in need of substantial maintenance and restoration to correct road deterioration and address road safety.