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DIAMOND CONSTRUCTION CO

DOT 71383ActiveInterstateQUINCY, IL

COMPANY

Authority since
—
MCS-150
2026-02-03 · 50,000 mi (2025)
Fleet
10 units · 1 trailers · 5 drivers
Annual mileage (VMT)
50,000 mi (2025)
Owner origin
Western-northern-european
Origin candidates
German 72%

ADDRESS

Physical
2000 N 18TH ST
QUINCY, IL 62301-1435
Mailing
2000 N 18TH STREET
QUINCY, IL 62301-1435

CONTACT

Phone
2172223532
Email
thaerr@diamond1946.com

OFFICERS

Primary Officer
CHAD KEPPNER
Title
PRESIDENT
Origin
Western-northern-european

OPERATION & CARGO

Operation classification
Private Property
Specialty
Heavy Haul / Oilfield
Cargo types
3
Machinery, Large ObjectsCommodities Dry BulkOther: ROCK,ASPHALT
Self-reported by the company on its latest MCS-150 filing (FMCSA census). Reflects what the carrier is authorized and equipped to haul, not actual recent loads. Specialty is our summary of the declared cargo mix.
AUTHORITY
—
Active authority
INSURANCE
None
No coverage on file
RISK GRADE
Moderate Risk
1 risk factors · 0 strengths
OOS RATE
100.0%
1 / 1 inspections

Fleet vs Reality

last 12 months · power-unit VINs from roadside inspections
Checking local VIN index…

Moderate Risk

1 risk factor · 0 strengths · 2 data points

SAFETY PERFORMANCE

Crash Record
5 crashes · 0 fatal · 2 with injuries · 5 tow-away
Clean Inspection Rate
0% — 0 clean of 1 inspections
Out-of-Service Rate
100.0% — driver OOS 0, vehicle OOS 1

COMPLIANCE & AUTHORITY

Operating Authority
Active operating authority on file
Authority Events
No authority history events
MCS-150 Filing
Last filed 2026-02-03

INSURANCE

Active Coverage
No insurance policies on file

SUMMARY

No active insurance on file

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