Crack & Seat
Controlled-Access Highways

LAWRENCE COUNTY, SOUTH DAKOTA, USA

Crack & Seat: I-90, w/o Spearfish

This project located west of Spearfish, South Dakota, near South Dakota’s border with Wyoming, included 38 lane miles of concrete pavement crack & seat and asphalt overlay. Antigo averaged 6.3 lane miles per day by completing the crack & seat in 6 work days.

The South Dakota DOT Crack & Seat specification required inducing full-depth cracks without loss of interlock at a crack spacing of 24” +/- 6”. 44 concrete cores were drilled and removed to verify proper cracking was being achieved. The cracked & seated lanes were reopened to traffic for several days prior to beginning the paving of the asphalt overlay.

 

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Project Details

Location

I-90, w/o Spearfish, from WY border to w/o USH 85, Lawrence County, South Dakota, USA

Existing Pavement

9.5” thick jointed plain concrete pavement (JPCP) over 3.25” thick lime treated gravel base

New Pavement

4.75” thick asphalt overlay

When

Crack & seat completed in 6 work days in May, 2016

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