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UnknownUSDOT 180139· CARRIER· EIN 84-0464189
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TRI-STATE GENERATION & TRANSMISSION ASSOCIATION INC

1100 W 116TH AVE, WESTMINSTER, CO, 80234(303) 254-3153tray@tristategt.orgTERRI MARRANZINO-RAY
Vetting snapshot
Authority
Unknown
per SAFER
Insurance
No active filing
not required
Vehicle OOS
0%
below 22% national avg
Driver OOS
0%
below 6.7% national avg
Crashes 24mo
1
none fatal
Red flags
None
nothing flagged
98
/ 100

Risk factors

Low riskVioCodes score
1 crash in the last 24 months

A weighted read of the public FMCSA signals below — authority, insurance, out-of-service, crashes, roadside OOS rates, and carrier connections. A starting point for vetting, not a guarantee.

Roadside inspection performance

Out-of-service rate vs national average. Lower is better.

Vehicle13 inspections · 0% OOS · National 22%
Driver22 inspections · 0% OOS · National 6.7%

Crash record (US, last 24 months)

Total

1

Tow-away

0

Injury

1

Fatal

0

Company profile

FMCSA census

PRIVATE PROPERTY

Power units
295
on file (MCS-150)
Drivers
180
165 hold a CDL
Annual mileage
3.9M mi
reported 2024
Recordable crash rate
—
per million miles
How far they run · drivers by operating lane
  • Interstate · 100+ mi179 drivers
  • Intrastate · 100+ mi1 drivers
Company officer
TERRI MARRANZINO-RAY
Operation
Interstate · Hazmat
D-U-N-S
42634378
Registered since
1974-06-01
Last MCS-150 update
2025-08-27
Census status
Active

Fleet: 295 trucks · 5 owned tractors · 298 owned trailers.

Source: FMCSA Company Census File (data.transportation.gov). Fleet and driver counts are self-reported on the carrier’s most recent MCS-150 filing.

Data change history

Every FMCSA record change we’ve detected — address, fleet size, contacts, MCS-150 — newest first.

Activity history

2 events
  1. 08/27/2025MCS-150 update filed

    3.9M mi reported (2024)

  2. 06/01/1974Registered with FMCSA

    PRIVATE PROPERTY

Merged from FMCSA authority, insurance, out-of-service, and census records.

🚛

Operations

Classification

  • PRIVATE PROPERTY

Area served

  • Interstate
★

FMCSA safety rating

Rating
Satisfactory
Type
Safety audit
Rated
1988-05-24
Last review
1988-05-24
📄

MCS-150 registration

Form date
2025-08-27
Reported mileage
3,860,000 mi (2024)
📜

Changes on file

FMCSA census history
  1. January, 2021

    First on-record entry — TRI-STATE GENERATION & TRANSMISSION ASSOCIATION INC, ,

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Data sourced from public FMCSA records via safer.fmcsa.dot.gov · Latest FMCSA update: Oct 2026 · Page refreshed: Oct 16, 2026, 3:33 AM. VioCodes is not affiliated with FMCSA. To dispute incorrect data, file a DataQs Request for Data Review.