Products

• Aggregate
• Asphalt
• Ready Mix Concrete

Construction

• Aggregate Placement
• Asphalt Paving
• Site Development and Grading
• Underground Utilities

Specialty Services

• Resort/Golf Course Construction
• Airport Construction and Maintenance

Knife River - Southern Idaho Division

Knife River – Southern Idaho Division (formerly Masco, Inc.) provides a full range of civil construction services and materials for land developers, public agencies, institutions, contractors and homeowners. With headquarters in Boise and a field office in McCall, Knife River is Southwest Idaho's premier excavation and paving contractor.

Main Office Location