Interstate 90 Exit 10 (Spearfish) Eastbound Off-Ramp Closure Scheduled

For Immediate Release: 
Tuesday, April 15, 2025

Contact:
Jason Baker, Project Engineer, 605-209-3388

SPEARFISH, S.D. – On Monday, April 28, 2025, work will begin to install a High Friction Surface Treatment (HFST) to the Interstate 90 exit 10 (Spearfish) eastbound off-ramp and bridge. The ramp will be closed with ramp traffic detoured to I-90 exit 12 (Jackson Boulevard). It’s anticipated that the ramp will remain closed until Thursday, May 15, 2025.   

This work is a part of an 11-structure project that will install new polymer chip seals and repair bridge joints along I-90 between the Wyoming state line and Whitewood. 

The prime contractor on the $3.19 million project is J.V. Bailey Company Inc. from Rapid City, SD. The project completion date is Friday, Oct. 31, 2025.  

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