291 Centennial Drive
PO Box 888
Big Timber, MT 59011

Phone: (406) 932-5140

Fax: (406) 932-3026

Phone: (406) 932-5140

Fax: (406) 932-3026

Public Works Director: Cory Conner sgroads@itstriangle.com

Gravel Road Specs

Sweet Grass County’s Gravel Requirement and Surfacing Chart
1″  100%
3/4″  80-90%
1/2″  60-80%
No. 4 50-70%
No. 8 37-60%
No. 40  13-36%
No. 200 4-15%
Plasticitiy Index  4-12%

Gravel Road Specification Graphic
ROADSPECSGRAVEL

 

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