US · FMCSA ACTIVE
DONALDSON BROS READY MIX INC
Hamilton, MT 59840 · DOT 437462
Company profile
Web-discovered · as of 2026-07-30
Donaldson Bros. Ready Mix is an aggregate-based, ready-mixed concrete supplier in western Montana (Hamilton) serving the Bitterroot Valley. They specialize in concrete, gravel, sand, and precast products, and were acquired by Knife River Corporation in March 2026.
Fleet use
Specialized service
Operating scope
Local
Service model
dedicated
Equipment
dump
Ownership
Subsidiary
part of Knife River Corporation
Employees
11-50
HQ · 477 US Highway 93 N, Hamilton, MT 59840
Official announcement confirms acquisition closed March 2026; website remains active with contact info [https://investors.kniferiver.com/news/news-details/2026/
Registry record
Source FMCSA · as of 2026-08-01
Fleet size
35
power units
Activity
road freight carrier
private licence
In operation since
1991
22 drivers
Data Services
Need verified contacts & enrichment for DONALDSON BROS READY MIX INC — or every carrier like it?Officer names, verified email & direct dial, insurer, safety and renewal signals — built to your ICP, delivered by API or CSV.
Build a custom dataset →