STACK BROS MECHANICAL CONTRACTORS INC

USDOT 1280175 • DBA: STACK BROS • 3119 HILL AVE, SUPERIOR, WI, 54880

ACTIVEMotor Carrier
Authority:1 active
Insurance:None on file
BOC-3:On file
Safety Rating:Not rated
MCS-150:Never updated
OOS Orders:None

Overview

Company profile from FMCSA Census File

USDOT
1,280,175
Status
ACTIVE
Operation
Interstate
Business Type
Motor Carrier
Phone
7153982964
Power Units (MCS-150)
134
Drivers (MCS-150)
143
MCS-150 Mileage
600,000
Physical Address
3119 HILL AVE, SUPERIOR, WI, 54880
Contact

Risk Signals1 flagged

HIGH
No insurance filings on record
This for-hire carrier has no insurance filings in the FMCSA database — a critical compliance gap.

Signals are auto-detected from FMCSA public records. This is not a regulatory determination.

Authority & Insurance

Operating authority, insurance filings, and BOC-3 status

Common Carrier — Active
Active Authority
1
Revoked / Inactive
0
Authority Types
1
Insurance Policies
None on file
BOC-3 Filing
On file

Operating Authority

fmcsa-authhistApr 5, 2026
Operating Authority
Authority TypeDocket #StatusOriginal DateFinal Date
Common CarrierMC-1583591ACTIVEUnknownUnknown

No insurance filings found for this carrier in FMCSA records.

Check FMCSA SAFER for current insurance status

Authority Action History (1 events)

fmcsa-authhist-blob
Authority Action History (1 events)
DocketAuthority TypeOriginal ActionServed DateDispositionDecided Date
MC1583591MOTOR PROPERTY COMMON CARRIERGRANTEDOct 12, 2023Unknown

Safety & Inspections

SMS BASIC scores, inspection history, and out-of-service rates

SMS BASIC Measures

Unsafe Driving
0
Hours of Service
0
Driver Fitness
0
Drugs / Alcohol
0.00
Vehicle Maintenance
12.09

BASIC measure values (lower = better). Percentile rankings not available for this carrier. Data from SMS snapshot Apr 5, 2026.

Inspections
23
Violations
48
9 OOS
Vehicle OOS %
21.7%
Driver OOS %
4.3%
Power Units (MCS-150)
134
Drivers (MCS-150)
143
Crash Records
1

Inspection Activity (24 months)

Monthly inspection counts with OOS months highlighted. Hover bars for details.

2
May
Jun
2
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
1
Apr
2
May
Jun
1
Jul
Aug
Sep
Oct
1
Nov
Dec
Jan
Feb
Mar
Apr
Clean monthMonth with OOSBased on latest 23 of 23 inspection records

Inspection Activity Map

3 states23 inspections

🚛
None Low Medium High🚛 Home base

Violation Summary (48 violations from 23 inspections)

fmcsa-inspection-file
Violation Summary (48 violations from 23 inspections)
CodeDescription# Violations# OOSSeverity WtBASIC
FMCSR:392.2Operating a CMV while ill or fatigued908Unsafe Driving
FMCSR:393.48(a)Inoperative/defective brakes408Vehicle Maintenance
FMCSR:393.48A-BIBDInoperative/defective brakes208Vehicle Maintenance
FMCSR:393.75A3-TAOLTires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS22Vehicle Maintenance
FMCSR:393.9A-LCLInoperable required lamps203Vehicle Maintenance
FMCSR:393.45B2-B-AIRBrake tubing/hoses inadequate207Vehicle Maintenance
FMCSR:396.3(a)(1)Inspection/repair/maintenance - general225Vehicle Maintenance
FMCSR:392.16(a)Failing to use seat belt (49 CFR)203Unsafe Driving
FMCSR:393.48A-BLMACBDInoperative/defective brakes108Vehicle Maintenance
FMCSR:396.3A1-BOSBRAKES OUT OF SERVICE: The number of defective brakes is equal to or greater than 20 percent of the service brakes on the vehicle or combination11Vehicle Maintenance
FMCSR:392.2-SLLS3Speeding 11-14 mph over limit107Unsafe Driving
FMCSR:391.11B4Medical (Certificate) - Operating a CDL (passenger or property carrying) vehicle that is non-excepted and the driver has self-certified as excepted interstate or11Driver Fitness
FMCSR:396.5B-LFuel system leak107Vehicle Maintenance
FMCSR:392.16-DFailing to use seat belt (49 CFR)103Unsafe Driving
FMCSR:393.55C2-BCoupling device/towing methods defective108Vehicle Maintenance
FMCSR:393.43(d)Brake - relay emergency valve117Vehicle Maintenance
FMCSR:393.110(b)Cargo securement - logs117Vehicle Maintenance
FMCSR:395.8(f)(1)Drivers record of duty status not current10Hours Of Service
FMCSR:393.95(a)(4)393.95(a)(4)10Vehicle Maintenance
FMCSR:393.95(a)Emergency equipment - fire extinguisher missing/defective105Vehicle Maintenance
FMCSR:396.17(c)No proof of periodic inspection103Vehicle Maintenance
FMCSR:393.75(c)Tire tread depth insufficient (other axles)105Vehicle Maintenance
FMCSR:393.55(d)(3)Coupling device/towing methods defective108Vehicle Maintenance
FMCSR:396.17C-PINo proof of periodic inspection103Vehicle Maintenance
FMCSR:393.45B2-BBrake tubing/hoses inadequate107Vehicle Maintenance
FMCSR:393.47(e)Slack adjuster defective107Vehicle Maintenance
FMCSR:393.53(b)Steering system components worn107Vehicle Maintenance
FMCSR:393.55(e)Coupling device/towing methods defective108Vehicle Maintenance
FMCSR:393.207(a)Suspension defective107Vehicle Maintenance
FMCSR:393.11Lighting devices/reflectors103Vehicle Maintenance
FMCSR:393.75(a)(3)Tire-flat and/or audible air leak11Vehicle Maintenance

Peer Context

This carrier vs national averages. Lower is better for all metrics.

Vehicle OOS Rate
21.7%vs nat'l 23.4%
-1.7 pts below avg
Driver OOS Rate
4.3%vs nat'l 6.7%
-2.4 pts below avg
Violations / Inspection
2.09vs nat'l 1.80
+0.29 above avg

National averages: vehicle OOS 23.4%, driver OOS 6.7%, violations per inspection ~1.8. Based on FMCSA MCSAP program data.

Inspection History (23 inspections)

fmcsa-inspectionsApr 5, 2026
Inspection History (23 inspections)
DateReport #StationStateLevelVehicleViolationsTop CodesOOS
Nov 25, 202586429025SOUTH RANGE WIWILevel 1FREIGHTLIN TRUCK TRACTOR5393.48A-BIBD, 393.48A-BLMACBD, 393.75A3-TAOLYes
Jul 22, 202585344949LAKE CITY MNMNLevel 3FORD STRAIGHT TRUCK2392.2-SLLS3, 391.11B4Yes
May 12, 202584676153SOUTH RANGE WIWILevel 1STERLING T STRAIGHT TRUCK3393.9A-LCL, 396.5B-L, 393.45B2-B-AIRNo
May 6, 202584620731SOUTH RANGE WIWILevel 1FREIGHTLIN STRAIGHT TRUCK1393.45B2-B-AIRNo
Apr 15, 202584437215SUPERIOR WIWILevel 2WESTERN ST STRAIGHT TRUCK3393.75A3-TAOL, 392.16-D, 393.55C2-BYes
Jul 16, 202482170626TWO HARBORS MNMNLevel 3PETERBILT TRUCK TRACTOR0No
Jul 8, 20248207263339 - I35 SB MM 212 NORTHWOODIALevel 2FORD STRAIGHT TRUCK5396.3(a)(1), 393.43(d), 393.110(b)Yes
May 23, 202481733301CLOQUET MNMNLevel 2FREIGHTLIN STRAIGHT TRUCK1393.95(a)(4)No
May 10, 202481624465CLOQUET MNMNLevel 3LANDOLL CO SEMI-TRAILER0No
Jan 31, 202480731018SAGINAW WEIGH SCALEMNLevel 2FRHT TRUCK TRACTOR7392.2, 393.95(a), 396.17(c)No
Jan 30, 202480720072CARLTONMNLevel 3FORD STRAIGHT TRUCK0No
Dec 28, 202380522078SOUTH RANGE WIWILevel 1FORD STRAIGHT TRUCK1396.17C-PINo
Dec 11, 202380365511SOUTH RANGE WIWILevel 1INTERNATIO STRAIGHT TRUCK2393.9A-LCL, 393.45B2-BNo
Oct 6, 202379875302SUPERIOR (CITY)WILevel 2FRHT STRAIGHT TRUCK1392.16(a)No
Sep 7, 202379620283SUPERIOR SWEFWILevel 2INTL STRAIGHT TRUCK2392.2No
Aug 29, 202379547109SUPERIOR SWEFWILevel 2TOWR SEMI-TRAILER0No
Aug 18, 202379459445SUPERIOR (TOWN)WILevel 1STRG STRAIGHT TRUCK3392.16(a), 393.47(e), 393.53(b)No
Aug 16, 202379435254RoadsideWILevel 3STRG STRAIGHT TRUCK1392.2No
Jul 29, 202379283863SUPERIOR (CITY)WILevel 3FORD STRAIGHT TRUCK1392.2No
Jul 25, 202379245728SUPERIOR SWEFWILevel 1PTRB STRAIGHT TRUCK3392.2, 393.55(e)No
May 23, 202378719654SUPERIOR SWEFWILevel 1STRG STRAIGHT TRUCK5393.48(a), 396.3(a)(1), 393.207(a)Yes
May 16, 202378648892SUPERIOR SWEFWILevel 1INTL STRAIGHT TRUCK0No
May 16, 202378649025STH 13WILevel 2TOWR FULL TRAILER2393.11, 393.75(a)(3)Yes

Inspection analytics

Monthly cadence, frequent stations, and violation mix

Inspections per month (24 mo)

9 total · 44.4% OOS
2024-052025-11
InspectionsOOS

Most frequent inspection stations

Violations by BASIC category

Recent Crashes

1 crash record from FMCSA Crash File

Total Crashes
1
Fatalities
0
Injuries
0
Tow-Aways
1

Crash History (1 records)

fmcsa-crash-fileApr 5, 2026
Crash History (1 records)
DateStateSeverityFatalitiesInjuriesCityLocationVINCarrier Name at Crash
Apr 15, 2015MNTOW00

Compliance Timeline

1 event merged from authority, insurance, enforcement, OOS, crash, MCS-150, and safety rating records

Apr 15, 2015
Crash
Tow-away crash
0 fatalities, 0 injuries

Related Records

Data sources & freshness

FMCSA Company Census File
Generated from 24-hour old database. Contact info and fleet counts may lag.
Updated 1 weeks ago
FMCSA Authority History
Updated 1 weeks ago
FMCSA Insurance Filings
Updated 1 weeks ago
FMCSA Vehicle Inspection File
Updated 1 weeks ago
Refresh dataLast updated: Apr 5, 2026