Carrierintel
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DIEMER CONSTRUCTION COMPANY LLC

Carrierintel Safety Score: 68/100. 5 inspection violations in 12 months. Last inspected Jun 2026.

DOT 641361MC 459420ActiveMotor CarrierInterstateBITCO GENERAL INSURANCE CORPORATIONTONKAWA, OK

COMPANY

Authority since
2003-05-23
MCS-150
2026-01-27 · 450,936 mi (2025)
Fleet
52 units · — trailers · 25 drivers
Annual mileage (VMT)
450,936 mi (2025)

ADDRESS

Physical
14211 S 13TH
TONKAWA, OK 74653
Mailing
Same as physical

CONTACT

Phone
5806283052
Email
diemer@diemerconstruction.com

OFFICERS

Primary Officer
BOB DIEMER
Title
MANAGER

OPERATION & CARGO

Operation classification
Private Property · Authorized For Hire
Specialty
Auto Transport
Cargo types
10
Motor VehiclesBuilding MaterialsMachinery, Large ObjectsLiquids / GasesOilfield EquipmentGrain, Feed, HayCommodities Dry BulkFarm SuppliesConstructionOther: DELETERIOUS SUBSTANCES
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
281 mo
Active authority
INSURANCE
1 active
BITCO GENERAL INSURANCE CORPORATION
RISK GRADE
Minimal Risk
1 risk factors · 3 strengths
OOS RATE
17.4%
4 / 23 inspections

Carrierintel Safety Score

Rolling 12-month heuristic based on inspections, OOS, violations, crashes & fatalities. Not the official FMCSA SMS score.

68
out of 100
Fair
Markers: OOS inspection Crash Fatality

Fleet vs Reality

last 12 months · power-unit VINs from roadside inspections
Declared (MCS-150)
52 power units
Unique power units seen
4
+ 4 trailer VINs
Inspections
4
Discrepancy
0.1x

Minimal Risk

1 risk factor · 3 strengths · 4 data points

SAFETY PERFORMANCE

Crash Record
8 crashes · 1 fatal · 5 with injuries · 6 tow-away
Clean Inspection Rate
83% — 19 clean of 23 inspections
Out-of-Service Rate
17.4% — driver OOS 1 insp., vehicle OOS 4 insp.

COMPLIANCE & AUTHORITY

USDOT Registration
Status: Active
Operating Authority
Active: Motor Carrier
Out-of-service orders
None on record
Authority Events
5 historical event(s) on file
MCS-150 Filing
Last filed 2026-01-27

INSURANCE

Active Coverage
1 policy(ies) on file · total max coverage $750,000

SUMMARY

1 fatal crash — most recent 3 yr ago
Low crash rate (1.0 per 100 trucks/yr)
83% clean inspections
Active insurance on file

INDUSTRY REPORTS

  • ELD Tampering — Carriers cited for ELD tampering under 49 CFR § 395.8(e), by carrier and state.
  • Top Violations — The ten most-cited FMCSA violation codes of the last 30 days.
  • Phantom Fleets — Declared power units against the vehicles seen at roadside inspections.
  • English Proficiency — Carriers whose drivers were cited under 49 CFR § 391.11(b)(2), by carrier and state.
  • Methodology — Where the data comes from and how the Safety Score and Risk Grade are built.

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