STACK BROS MECHANICAL CONTRACTORS INC
DBA STACK BROS
USDOT 1280175MC-Docket MC1583591SUPERIOR, WI
Review before tenderingHazmat-authorized134 power units
STACK BROS MECHANICAL CONTRACTORS INC (USDOT 1280175) in SUPERIOR, WI — has findings to review before tendering. FMCSA authority, fleet size, BASIC safety measures, crash and inspection history.
- Has active operating authority that's tenderable today (common or contract).
- No pending authority revocation.
- Not under an uncleared federal out-of-service or safety action.
- BIPD on file is $750,000 — below your $1,000,000 floor (federal general-freight minimum is $750,000).
- No cargo insurance on file. Required for many shipper contracts.
- No history of insurance lapses.
- Unrated by FMCSA. Most carriers are unrated — unrated is not the same as unsafe.
- No BASIC alerts in any of the five public SMS categories.
- Driver and vehicle out-of-service rate is above the national roadside average.
- No preventable crashes in the last 24 months; recordable crash rate 0 not elevated.
- No fatal crashes in the last 24 months.
- No link to a prior revoked authority.
- 1 other active carrier(s) operate from this exact street + ZIP. High counts are often legitimate registered-agent / virtual-office addresses — treat as context, not a verdict.
- Crash Indicator and Hazmat Compliance BASICs are statutorily withheld from public SMS under the FAST Act — their absence is not a clean record; use the crash-risk signals above instead. The Hazmat Compliance BASIC is also withheld for this hazmat carrier.
Built from FMCSA's public Safety Management System data — guidance, not legal advice. Verify directly with the carrier and your cargo policy before tendering.
Authority
- Common authority
- Active
- Contract authority
- Not applicable
Safety & BASIC scorecard
BASIC safety measures
Unsafe driving
No alert
measure 0.15
Hours of service
No alert
measure 0.35
Driver fitness
No alert
measure 0.57
Controlled substance
No alert
measure 0
Vehicle maintenance
No alert
measure 11.9
Under the FAST Act, FMCSA publishes an absolute per-category measure (not a 0–100 percentile) for these five BASICs — the alert flag, not the raw number, is the risk signal. The Crash Indicator and Hazmat Compliance BASICs are statutorily withheld from public view.
Last 24 months
0
Fatalities
0
Injuries
0
Crashes
7
Inspections
4
OOS inspections
7
OOS violations
Insurance
- BIPD on file
- $750,000 below $1M baseline
- Cargo insurance
- No
- Bond on file
- No
Fleet
- Power units
- 134
- Total drivers
- 143
- Years in business
- 22
- Hazmat authority
- Yes
Crash risk
- Preventable crashes (24 mo)
- 0 of 0 total crash(es)
- Recordable crash rate
- 0
- Driver OOS rate
- 11.1%Above national
- Vehicle OOS rate
- 50%Above national
The official Crash Indicator BASIC is withheld from public SMS under the FAST Act — these derived signals stand in for it; their absence is not a clean record.
Compliance & history
- Reincarnation / chameleon
- No prior revoked authority
- Involuntary revocations
- None on file
- Physical address
- 1 other carrier(s) at this address
- Federal OOS / safety action
- None on file
- MCS-150 self-report
- 2025-05-27
- Insurance lapse history
- No lapses on record
- Last compliance review
- None on file
Inspection history (all-time)
23
Inspections
5
OOS inspections
50
Violations
9
OOS violations
0
Post-accident
Record spans 2023-07-25 → 2026-05-20.
Crash history (last 24 months)
No crashes recorded in the last 24 months.
Violation pattern (all-time, by area)
| Area (49 CFR part) | Violations | Out of service | Most recent |
|---|---|---|---|
Vehicle parts & maintenance 393
|
20 | 4 | 2025-11-25 |
Unsafe driving 392
|
10 | 0 | 2025-07-22 |
Vehicle inspection & repair 396
|
6 | 2 | 2026-04-21 |
Driver qualifications 391
|
1 | 1 | 2025-07-22 |
Hours of service 395
|
1 | 0 | 2024-07-08 |
Recent violations (last 24 months, worst first)
| Date | Category | Violation | OOS |
|---|---|---|---|
| 2025-11-25 | Vehicle Maintenance | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | OOS |
| 2025-11-25 | Vehicle Maintenance | Drum Brake - Inoperative other than a steering axle | — |
| 2025-11-25 | Vehicle Maintenance | Drum Brake - Loose chamber/spider/camshaft support bracket | — |
| 2025-11-25 | Vehicle Maintenance | Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | OOS |
| 2025-07-22 | Unsafe Driving | State/Local Laws - Speeding 11-14 miles per hour over the speed limit | — |
| 2025-07-22 | Driver Fitness | Medical (Certificate) - Operating a CDL (passenger or property carrying) vehicle that is non-excepted and the driver has | OOS |
| 2025-05-12 | Vehicle Maintenance | Air Brake - Hose/tubing damaged or not secured | — |
| 2025-05-12 | Vehicle Maintenance | Lubrication - Oil or grease leak | — |
| 2025-05-12 | Vehicle Maintenance | Lighting - Clearance lamp(s) inoperative | — |
| 2025-05-06 | Vehicle Maintenance | Air Brake - Hose/tubing damaged or not secured | — |
| 2025-04-15 | Vehicle Maintenance | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | OOS |
| 2025-04-15 | Unsafe Driving | Driver - Failed to use seat belt while operating a CMV | — |
| 2025-04-15 | Vehicle Maintenance | Air Brake - CMV other than truck-tractor manufactured on or after March 1 1998 not equipped with an antilock brake syste | — |
| 2024-07-08 | Vehicle Maintenance | No or defective automatic trailer brake | OOS |
| 2024-07-08 | Vehicle Maintenance | Insufficient tiedowns to prevent forward movement for load not blocked by headerboard bulkhead or other cargo | OOS |
| 2024-07-08 | Hours-of-Service Compliance | Drivers record of duty status not current | — |
| 2024-07-08 | Vehicle Maintenance | Inoperative/defective brakes | — |
| 2024-07-08 | Vehicle Maintenance | BRAKES OUT OF SERVICE: The number of defective brakes is equal to or greater than 20 percent of the service brakes on th | OOS |
| 2024-05-23 | Vehicle Maintenance | Emergency Equipment - Fire Extinguishers - unsecured | — |
Recent inspections (with violations, newest first)
Showing the 15 most-recent inspections that had violations. Clean inspections aren't listed here — they're counted in the all-time inspection totals above.
2026-04-21 1 viol
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Vehicle inspection & repair 396 | 5B-L | — | — |
2025-11-25 5 viols· 2 OOS
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Vehicle parts & maintenance 393 | 48A-BLMACBD | — | — |
| Vehicle parts & maintenance 393 | 48A-BIBD | — | — |
| Vehicle parts & maintenance 393 | 48A-BIBD | — | — |
| Vehicle parts & maintenance 393 | 75A3-TAOL | OOS | — |
| Vehicle inspection & repair 396 | 3A1-BOS | OOS | — |
2025-07-22 2 viols· 1 OOS
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Unsafe driving 392 | 2-SLLS3 | — | — |
| Driver qualifications 391 | 11B4 | OOS | — |
2025-05-12 3 viols
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Vehicle parts & maintenance 393 | 9A-LCL | — | — |
| Vehicle inspection & repair 396 | 5B-L | — | — |
| Vehicle parts & maintenance 393 | 45B2-B-AIR | — | — |
2025-05-06 1 viol
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Vehicle parts & maintenance 393 | 45B2-B-AIR | — | — |
2025-04-15 3 viols· 1 OOS
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Vehicle parts & maintenance 393 | 75A3-TAOL | OOS | — |
| Unsafe driving 392 | 16-D | — | — |
| Vehicle parts & maintenance 393 | 55C2-B | — | — |
2024-07-08 5 viols· 3 OOS
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Vehicle inspection & repair 396 | 3(a)(1) | OOS | — |
| Vehicle parts & maintenance 393 | 43(d) | OOS | — |
| Vehicle parts & maintenance 393 | 110(b) | OOS | — |
| Vehicle parts & maintenance 393 | 48(a) | — | — |
| Hours of service 395 | 8(f)(1) | — | — |
2024-05-23 1 viol
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Vehicle parts & maintenance 393 | 95(a)(4) | — | — |
2024-01-31 7 viols
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Unsafe driving 392 | 2 | — | — |
| Vehicle parts & maintenance 393 | 95(a) | — | — |
| Vehicle inspection & repair 396 | 17(c) | — | — |
| Unsafe driving 392 | 2 | — | — |
| Vehicle parts & maintenance 393 | 75(c) | — | — |
| Vehicle parts & maintenance 393 | 55(d)(3) | — | — |
| Unsafe driving 392 | 2 | — | — |
2023-12-28 1 viol
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Vehicle inspection & repair 396 | 17C-PI | — | — |
2023-12-11 2 viols
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Vehicle parts & maintenance 393 | 9A-LCL | — | — |
| Vehicle parts & maintenance 393 | 45B2-B | — | — |
2023-10-06 1 viol
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Unsafe driving 392 | 16(a) | — | — |
2023-09-07 2 viols
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Unsafe driving 392 | 2 | — | — |
| Unsafe driving 392 | 2 | — | — |
2023-08-18 3 viols
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Unsafe driving 392 | 16(a) | — | — |
| Vehicle parts & maintenance 393 | 47(e) | — | — |
| Vehicle parts & maintenance 393 | 53(b) | — | — |
2023-08-16 1 viol
| Area (part) | Section | OOS | Citation |
|---|---|---|---|
| Unsafe driving 392 | 2 | — | — |
Verify on FMCSA
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