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NCR Major Drainage 2011-Map

Orange dots show where the projects are located
This project fixes drainage problems on four state highways in four North Central Washington counties:

  • US 97A in Chelan County MP 224.80 (Knapps Hill Tunnel, 10 miles north of Entiat)
  • SR 20 in Okanogan County MP 262.56 (a 1/2 mile east of Tonasket)
  • SR 17 in Douglas County MP 128.65 & MP 131.23 to MP 131.25 (4 miles and 6 miles east of Bridgeport)
  • SR 262 in Grant County MP 1.46 & MP 7.00 to MP 13.10 (1-1/2 miles from the SR 26 Jct./halfway between the SR 26 Jct. and Potholes State Park/ 1/2 mile east of Potholes State Park)