Skip Navigation

EIP Notice: Flood Warning issued December 2 at 8:51PM EST until December 8 at 1:00AM EST by NWS Tallahassee FL... More »

Alternative Stabilization Program

Leon County's Unpaved Road Stabilization Program improves County maintained unpaved roads using a stabilization method known as Open Graded Cold Mix (OGCM).

Close up of OCGM

Typical road segment

Close up of the material used

Typical road segment

The open graded cold mix surface treatment is a blend of course aggregated (number 57 stone) with a water based latex emulsion.  The mix is placed onto an existing direct road surface in a 3-inch lift.  The use of open grade cold mix as a surface treatment rapidly removes surface water through a porous texture.  Sediment transport is significantly reduced and drainage enhanced.  Open graded cold mix produces a reduction of routine maintenance costs and relieves vehicular travel difficulties during wet and dry weather.  The porous nature of this material will easily accommodate an inch of runoff due to the 30% void ration.

Leon County Public Works
2280 Miccosukee Road
Tallahassee, Fl 32308

Phone: 850-606-1400
Fax: 850-606-1401