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SDDOT News

Friday, August 23, 2019
  • High Friction Surface Treatment on Interstate 90
  • Friday, August 23, 2019
  • The South Dakota Department of Transportation says construction will start for a High Friction Surface Treatment (HFST) on the westbound Interstate 90 Exit 57 off ramp to southbound Interstate 190, on Sunday Aug. 25, 2019.
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