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VALIDATED

STACK BROS MECHANICAL CONTRACTORS INC

Trust Score

Excellent Why this score?

Company CheckSTACK BROS MECHANICAL CONTRACTORS INC · DOT 1280175

DBA: STACK BROS

3119 HILL AVE, SUPERIOR, WI, 54880

DOT# 1280175 MC# 1583591 Superior, Wisconsin 2 years

CARRIER

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134

Power Units

143

Drivers

Crashes (24-Month)

$750,000

Insurance

Not Rated

Safety Rating

Inspections

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Deep records on this carrier, only on LoadWrap

SMS BASIC Scores→ Safety & Inspections→ Licensing & Insurance→ Know Your Rights→ VIN Watch & CARB Check→ Get Change Alerts→

Public record

5 events tracked · latest Sep 9, 2026 ↓ Show details ↓

Safety & compliance 4

May 20, 2026
Clean roadside inspection, no violations.
May 12, 2026
Roadside inspection, 2 out-of-service violations.
Apr 21, 2026
Roadside inspection, 1 violation (no OOS).
Nov 25, 2025
Roadside inspection, 2 out-of-service violations.

Insurance 1

Current
Active insurance on file ($750,000).

Public FMCSA record · blue clean · orange change · red risk.

Contact Details

PhoneSign in to view

EmailSign in to view

Physical Address3119 HILL AVE, SUPERIOR, WI, 54880

Mailing Address3119 HILL AVE, SUPERIOR, WI, 54880

Other Companies at This Address

Address3119 HILL AVE, SUPERIOR, WI 54880

Others here

Distinct phones

Active

Company	DOT	Phone	Status
FDL STAR CONSTRUCTION LLC	4177839	Sign in	Active
STACK BROS MECHANICAL CONTRACTORS INC this company	1280175	Sign in	Active

Note: sharing an address is legal and common (registered agents, virtual offices, business centers). A shared address never reduces the Trust Score.

Operating Authorities

Authority TypePRIVATE PROPERTY;AUTHORIZED FOR HIRE

Carrier OperationA - Interstate

DocketMC1583591

CommonActive

ContractNot Active

BrokerNot Active

Operating2 years

All Docket Numbers

MC1583591

Cargo Transported

Machinery, Large ObjectsConstruction

Operation Classification

Authorized For HirePrivate (Property)

SMS BASIC Scores

FMCSA safety categories, last 24 months. Above Cutoff = FMCSA flags a problem · Below cutoff = within limits · Clean = no violations.

Unsafe Driving

measure .1 · 2 insp with violations

Below cutoff

Hours-of-Service Compliance

measure 0 · 0 insp with violations

Clean

Driver Fitness

measure .26 · 1 insp with violations

Below cutoff

Controlled Substances / Alcohol

measure 0 · 0 insp with violations

Clean

Vehicle Maintenance

measure 9.92 · 6 insp with violations

Below cutoff

Source: FMCSA SMS, updated monthly.

Mileage

Annual Mileage600,000 miles

Mileage Year2022

VMT SourceMCS-150 Form

Drivers

143

Interstate

Intrastate

CDL

143

Total

Interstate >100mi0

Interstate <100mi0

Intrastate >100mi0

Intrastate <100mi0

Equipment

No equipment breakdown on file with FMCSA.

HazMatYes

Safety Summary

Safety RatingNot Rated

Total Crashes (24-mo)0

Fatal0

Driver OOS11.1% avg 5.5%

Vehicle OOS50.0% avg 20.7%

SmartWay PartnerNo

Last Review02/17/2011

Insurance

Amount$750,000

Type91X

VerifiedFMCSA · 08/03/2026

CompanyTRAVELERS INDEMNITY COMPANY

Policy #3L209924

Last checked09/08/2026

Quick Facts

StatusActive

TypeCarrier

Fleet134 units

Drivers143

Mileage600,000 mi

Operating2 years

MCS-15005/2025

Safety & Inspection Data

Crash Summary

Total Crashes (24-mo)0

Fatal0

Injury0

Tow-Away0

Driver Inspections

Total9

Out of Service1

OOS Rate11.1%

National Avg5.5%

Above National Average

Vehicle Inspections

Total6

Out of Service3

OOS Rate50.0%

National Avg20.7%

Above National Average

Last FMCSA Review: 02/17/2011

Safety Trends by Year

Roadside inspections and crashes on file, year over year. The red portion of each inspection bar is the out-of-service share; ▲/▼ compares to the prior year.

Inspections · red = OOS

2023

7 · 0 OOS -

2024

6 · 1 OOS ▲

2025

5 · 3 OOS ▲

2026

3 · 1 OOS ▼

Crashes

No crashes on record.

Based on FMCSA crash and roadside inspection records (rolling 3-year window). The latest year may be partial.

Out-of-Service Summary Last 24 months

Live FMCSA roadside inspections through May 2026, 8 inspections, 4 resulted in out-of-service (50% OOS rate).

Driver Out-of-Service 1 OOS

Vehicle Out-of-Service 5 OOS

Live FMCSA roadside inspection records, refreshed monthly.

Roadside Violations by Safety Category Last 24 months

23 roadside violations across 8 inspections, grouped into FMCSA safety-behavior categories. The shaded portion shows how many were serious enough to result in an out-of-service order.

ViolationsOut-of-service

Vehicle Maintenance 18 violations · 4 OOS

Unsafe Driving 4 violations · 1 OOS

Driver Fitness 1 violation · 1 OOS

Categories follow FMCSR violation parts (Part 393/396 = Vehicle Maintenance, Part 395 = HOS; "Other" = general/administrative parts such as 390). Raw violation counts and out-of-service results, not FMCSA percentile rankings, which are not published for property carriers.

Inspection Records (21)

Date	State	Level	Location	Violations	OOS	Driver Viol	Driver OOS	Vehicle Viol	Vehicle OOS	HazMat
05/20/2026	WI	Full (Level I)	SOUTH RANGE WI	0	0	0	0	0	0	-	▲Detail
05/12/2026	WI	Full (Level I)	SOUTH RANGE WI	8	2	1	0	7	2	-	▲Detail
04/21/2026	WI	Full (Level I)	SOUTH RANGE WI	1	0	0	0	1	0	-	▲Detail
11/25/2025	WI	Full (Level I)	SOUTH RANGE WI	5	2	0	0	5	2	-	▲Detail
07/22/2025	MN	Driver-Only (Level III)	LAKE CITY MN	2	1	0	1	0	0	-	▲Detail
05/12/2025	WI	Full (Level I)	SOUTH RANGE WI	3	0	0	0	0	0	-	▲Detail
05/06/2025	WI	Full (Level I)	SOUTH RANGE WI	1	0	0	0	0	0	-	▲Detail
04/15/2025	WI	Walk-Around (Level II)	SUPERIOR WI	3	1	0	0	0	1	-	▲Detail
07/16/2024	MN	Driver-Only (Level III)	TWO HARBORS MN	0	0	0	0	0	0	-	▲Detail
07/08/2024	IA	Walk-Around (Level II)	39 - I35 SB MM 212 NORTHWOOD	5	3	1	0	4	3	-	▲Detail
05/23/2024	MN	Walk-Around (Level II)	CLOQUET MN	1	0	0	0	0	0	-	▲Detail
05/10/2024	MN	Driver-Only (Level III)	CLOQUET MN	0	0	0	0	0	0	-	▲Detail
01/31/2024	MN	Walk-Around (Level II)	SAGINAW WEIGH SCALE	7	0	1	0	6	0	-	▲Detail
01/30/2024	MN	Driver-Only (Level III)	CARLTON	0	0	0	0	0	0	-	▲Detail
12/28/2023	WI	Full (Level I)	SOUTH RANGE WI	1	0	0	0	0	0	-	▲Detail
12/11/2023	WI	Full (Level I)	SOUTH RANGE WI	2	0	0	0	0	0	-	▲Detail
10/06/2023	WI	Walk-Around (Level II)	SUPERIOR (CITY)	1	0	1	0	0	0	-	▲Detail
09/07/2023	WI	Walk-Around (Level II)	SUPERIOR SWEF	2	0	0	0	2	0	-	▲Detail
08/29/2023	WI	Walk-Around (Level II)	SUPERIOR SWEF	0	0	0	0	0	0	-	▲Detail
08/18/2023	WI	Full (Level I)	SUPERIOR (TOWN)	3	0	1	0	2	0	-	▲Detail
08/16/2023	WI	Driver-Only (Level III)	35 @ WICK RD	1	0	1	0	0	0	-	▲Detail

Safety Performance Percentiles

FMCSA SMS percentile rankings. Higher percentile = worse performance relative to peers.

Total Inspections8

Unsafe Driving 2 viols

Driver Fitness 1 viols

Vehicle Maintenance 6 viols

Licensing & Insurance

No insurance history records.

No active insurance policies.

Docket	Type	Action	Served	Disposition	Disp Date
MC1583591	MOTOR PROPERTY COMMON CARRIER	GRANTED	10/12/2023	-	-

No revocation records.

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Trust Score over time and the complete authority and insurance timeline, not just today.

84/100

Excellent

VERIFIED

Every carrier starts at 100. We subtract points for each missing requirement or risk factor below. Verified means all four core requirements pass.

Score breakdown, from 100 to 84

Starts at 100−16 totalFinal 84

Limited operating history (1-3 years)−6

Driver out-of-service rate above national average−5

Vehicle out-of-service rate above national average−5

Verification, 4 core requirements

Active operating authority

FMCSA shows the USDOT registration and authority are active.

Authorized for hire

Holds active for-hire (common or contract) authority.

Active insurance on file

Insurance coverage and carrier are on file with FMCSA.

Safety rating not Unsatisfactory

No Unsatisfactory rating on file.

What's lowering this score

-6

Limited operating history (1-3 years)

Authority granted about 2 year(s) ago.

-5

Driver out-of-service rate above national average

Driver OOS 11.1111% vs national avg 5.51%.

-5

Vehicle out-of-service rate above national average

Vehicle OOS 50% vs national avg 20.72%.

Where this company lands, risk scales

Driver out-of-service rate−5 of 5

0 pts · low risk−5 pts · high risk

Driver OOS 11.1111% vs national avg 5.51%.

Vehicle out-of-service rate−5 of 5

0 pts · low risk−5 pts · high risk

Vehicle OOS 50% vs national avg 20.72%.

How we calculate the Trust Score

Every company starts at 100

We subtract points for each missing requirement or risk factor. Verified means all the core requirements for that company's type pass. Nothing is added back, the score is a deduction model built only on public FMCSA data. No pay-to-play, no opinions.

Requirements differ by company type

Each company is judged fairly on its own FMCSA obligations. Anything that doesn't apply shows as a grey N/A, not required, never a penalty.

Carrier (for-hire)

Operating authority, authorized-for-hire, insurance on file, safety rating.

Broker

Broker authority + $75k surety bond (BMC-84/85). MCS-150 not required (no fleet).

Freight forwarder

FF authority + $75k bond + BOC-3. MCS-150 not required (no trucks).

Private carrier

Active USDOT + MCS-150 + safety. No operating authority / for-hire / insurance filing required (hauls its own goods).

Crashes are scaled, not flat

Crash history is proportional. We don't apply a flat penalty, we scale it to (a) crashes per vehicle in the fleet and (b) the share of those crashes that were fatal. So a big, safe fleet barely moves; a small fleet with many (and fatal) crashes takes a large hit.

0 pts deductedscaled by rate & severityup to −28 pts

Low end

50,000 vehicles + 1 crash → ~0 pts. A huge fleet with very few crashes per vehicle is almost untouched.

High end

5 vehicles + 3 crashes incl. fatal → large deduction (near the −28 cap). Many crashes per truck, fatal-heavy.

Mechanics: deduction is capped at 28 points, weighted roughly 60% on crashes-per-vehicle and 40% on the fatal ratio. Zero crashes = zero deduction. If fleet size is unknown, only crash severity can move the score (conservative).

Out-of-service rate vs. the national average

Driver and vehicle out-of-service rates are measured against the FMCSA national average, not a flat number. A company only takes the deduction when it sits above the national benchmark, for example “Vehicle OOS 37% vs national avg 20.7%”.

Point reference, the full menu

Every factor and exactly how many points it can remove. Knockout factors (they also fail Verification) are marked.

Factor	Points
USDOT / authority not active with FMCSA knockout	−25
Missing operating authority (when required) knockout	−15
No insurance or surety bond on file (when required) knockout	−25
Unsatisfactory safety rating knockout	−30
Conditional safety rating	−12
MCS-150 biennial update overdue (carriers)	−10
Crashes, rate-adjusted (per-vehicle & fatal share)	0 to −28
Driver OOS rate above national average	−5
Vehicle OOS rate above national average	−5
Very new carrier (under 1 year)	−10
Limited operating history (1-3 years)	−6
Moderate operating history (3-5 years)	−3
Operating history unknown	−3
No public phone number	−3
No public email address	−2

All inputs come from public FMCSA records (operating authority, insurance/bond filings, the SAFER/SMS safety profile, crash & inspection reports). If FMCSA updates a record, the score updates with it. For the full deduction table, see the methodology page.

STACK BROS MECHANICAL CONTRACTORS INC

Trust Score

Public record

Company Information

Contact Details

Other Companies at This Address

Operating Authorities

All Docket Numbers

Cargo Transported

Operation Classification

SMS BASIC Scores

Mileage

Drivers

Equipment

Safety Summary

Insurance

Quick Facts

Safety & Inspection Data

Safety Trends by Year

Out-of-Service Summary Last 24 months

Roadside Violations by Safety Category Last 24 months

Inspection Records (21)

Safety Performance Percentiles

Licensing & Insurance

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