MAYNARD MONSEN & SON INC
USDOT 1224256 • N56W16421 SILVER SPRING DR, MENOMONEE FALLS, WI, 53051
ACTIVE
Authority:None on file
Insurance:None on file
BOC-3:Not on file
Safety Rating:Not rated
MCS-150:Never updated
OOS Orders:None
Overview
Company profile from FMCSA Census File
USDOT
1,224,256
Status
ACTIVE
Operation
Intrastate (Non-Hazmat)
State
Phone
2622523929
Email
Power Units (MCS-150)
16
Drivers (MCS-150)
11
MCS-150 Mileage
500,000
Physical Address
N56W16421 SILVER SPRING DR, MENOMONEE FALLS, WI, 53051
Contact
Phone: 2622523929
Email: [email protected]
Risk Signals1 flagged
MEDIUM
Elevated driver OOS rate: 20.0%
National average is 6.7%. This carrier's driver OOS rate is 13.3 percentage points above average.
Signals are auto-detected from FMCSA public records. This is not a regulatory determination.
Authority & Insurance
Operating authority, insurance filings, and BOC-3 status
Active Authority
0
Revoked / Inactive
0
Authority Types
0
Insurance Policies
None on file
BOC-3 Filing
Not on file
Operating Authority
fmcsa-authhistApr 5, 2026
No records found
No insurance filings found for this carrier in FMCSA records.
Safety & Inspections
SMS BASIC scores, inspection history, and out-of-service rates
SMS BASIC Scores
Driver Fitness
73%
Drugs / Alcohol
1%
Hours of Service
N/A
Unsafe Driving
1%
Vehicle Maintenance
5%
Higher percentile = worse safety performance relative to peers. Scores at or above 75% trigger FMCSA alerts.
Inspections
10
Violations
23
6 OOS
Vehicle OOS %
10.0%
Driver OOS %
20.0%
Above nat'l avg (6.7%)
Power Units (MCS-150)
16
Drivers (MCS-150)
11
Crash Records
14
Inspection Activity (24 months)
Monthly inspection counts with OOS months highlighted. Hover bars for details.
May
Jun
Jul
Aug
1
Sep
1
Oct
Nov
Dec
Jan
Feb
Mar
1
Apr
May
Jun
Jul
Aug
1
Sep
Oct
1
Nov
Dec
Jan
Feb
Mar
Apr
Clean monthMonth with OOSBased on latest 10 of 10 inspection records
Inspection Activity Map
1 state • 10 inspections
None Low Medium High🚛 Home base
Violation Summary (23 violations from 10 inspections)
fmcsa-inspection-file
| Code | Description | # Violations | # OOS | Severity Wt | BASIC |
|---|---|---|---|---|---|
| FMCSR:396.17C-PI | No proof of periodic inspection | 3 | 0 | 3 | Vehicle Maintenance |
| FMCSR:383.23A2-LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | 2 | 2 | — | Driver Fitness |
| FMCSR:390.21TB2-DOT | 390.21TB2-DOT | 2 | 0 | — | General/Admin |
| FMCSR:391.41APC | Medical (Certificate) - Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency | 1 | 1 | — | Driver Fitness |
| FMCSR:392.2-SLLTCD | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:393.95A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | 1 | 0 | — | Vehicle Maintenance |
| FMCSR:393.9A-LTSI | Inoperable required lamps | 1 | 1 | 3 | Vehicle Maintenance |
| FMCSR:393.207A-STCB | Suspension defective | 1 | 1 | 7 | Vehicle Maintenance |
| FMCSR:392.2-SLLED | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:392.2-SLLEQP | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:392.2-SLL | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:392.16-D | Failing to use seat belt (49 CFR) | 1 | 0 | 3 | Unsafe Driving |
| FMCSR:390.21TB1-MC | 390.21TB1-MC | 1 | 0 | — | General/Admin |
| FMCSR:393.83E | Exhaust - System discharging from a truck or truck-tractor at a location other than at the rear of the cab | 1 | 0 | — | Vehicle Maintenance |
| FMCSR:390.3E-DAC | Driver prohibited from performing safety sensitive functions per 382.501(a) in the Drug and Alcohol Clearinghouse | 1 | 1 | — | General/Admin |
| FMCSR:393.45(d) | Brake tubing/hoses inadequate | 1 | 0 | 7 | Vehicle Maintenance |
| FMCSR:392.2 | Operating a CMV while ill or fatigued | 1 | 0 | 8 | Unsafe Driving |
| FMCSR:393.11 | Lighting devices/reflectors | 1 | 0 | 3 | Vehicle Maintenance |
| FMCSR:393.55(d)(1) | Coupling device/towing methods defective | 1 | 0 | 8 | Vehicle Maintenance |
Peer Context
This carrier vs national averages. Lower is better for all metrics.
Vehicle OOS Rate
10.0%vs nat'l 23.4%
-13.4 pts below avg
Driver OOS Rate
20.0%vs nat'l 6.7%
+13.3 pts above avg
Violations / Inspection
2.30vs nat'l 1.80
+0.50 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 (10 inspections)
fmcsa-inspectionsApr 5, 2026
| Date | Report # | Station | State | Level | Vehicle | Violations | Top Codes | OOS |
|---|---|---|---|---|---|---|---|---|
| Nov 17, 2025 | 86366014 | MENOMONEE FALLS WI | WI | Level 3 | WESTERN ST STRAIGHT TRUCK | 3 | 383.23A2-LCDLN, 391.41APC, 392.2-SLLTCD | Yes |
| Sep 2, 2025 | 85688941 | MEQUON WI | WI | Level 2 | MACK STRAIGHT TRUCK | 0 | — | No |
| Apr 17, 2025 | 84449047 | WAUKESHA WI | WI | Level 2 | PETERBILT TRUCK TRACTOR | 9 | 396.17C-PI, 390.21TB2-DOT, 393.95A1 | Yes |
| Oct 18, 2024 | 82948810 | MENOMONEE FALLS WI | WI | Level 2 | MACK STRAIGHT TRUCK | 7 | 396.17C-PI, 390.21TB2-DOT, 383.23A2-LCDLN | Yes |
| Sep 6, 2024 | 82605651 | MILWAUKEE WI | WI | Level 1 | FREIGHTLIN STRAIGHT TRUCK | 0 | — | No |
| Feb 29, 2024 | 81464140 | MENOMONEE FALLS WI | WI | Level 5 | MACK STRAIGHT TRUCK | 0 | — | No |
| Feb 29, 2024 | 81463515 | MENOMONEE FALLS WI | WI | Level 5 | MACK STRAIGHT TRUCK | 0 | — | No |
| Feb 29, 2024 | 81463368 | MENOMONEE FALLS WI | WI | Level 5 | PETERBILT TRUCK TRACTOR | 1 | 393.45(d) | No |
| Feb 29, 2024 | 81463476 | MENOMONEE FALLS WI | WI | Level 5 | WESTERN ST STRAIGHT TRUCK | 0 | — | No |
| May 1, 2023 | 78508417 | VILLAGE OF MARSHALL | WI | Level 2 | MACK STRAIGHT TRUCK | 3 | 392.2, 393.11, 393.55(d)(1) | No |
Inspection analytics
Monthly cadence, frequent stations, and violation mix
Inspections per month (24 mo)
5 total · 60.0% OOS
2024-092025-11
InspectionsOOS
Most frequent inspection stations
Violations by BASIC category
Recent Crashes
14 crash records from FMCSA Crash File
Total Crashes
14
Fatalities
1
Fatal crashes on record
Injuries
5
Across 5 crashes
Tow-Aways
13
Crash History (14 records)
fmcsa-crash-fileApr 5, 2026
| Date | State | Severity | Fatalities | Injuries | City | Location | VIN | Carrier Name at Crash |
|---|---|---|---|---|---|---|---|---|
| Dec 7, 2023 | WI | INJURY | 0 | 1 | GREENFIELD | CTH U NB | ...002015 | MAYNARD MONSEN & SON INC |
| Sep 15, 2023 | WI | TOW | 0 | 0 | WAUWATOSA | IH 041 NB | ...061255 | MAYNARD MONSEN & SON INC |
| Jun 27, 2023 | WI | TOW | 0 | 0 | JACKSON | STH 060 EB | ...020432 | MAYNARD MONSEN & SON INC |
| May 17, 2021 | WI | TOW | 0 | 0 | BUTLER | 124TH ST N | ...040382 | MAYNARD MONSEN & SON INC |
| Aug 21, 2020 | WI | INJURY | 0 | 1 | — | — | — | — |
| Jan 14, 2020 | WI | TOW | 0 | 0 | — | — | — | — |
| Sep 13, 2018 | WI | TOW | 0 | 0 | — | — | — | — |
| Apr 4, 2018 | WI | TOW | 0 | 0 | — | — | — | — |
| Jul 9, 2013 | WI | TOW | 0 | 0 | — | — | — | — |
| Oct 4, 2012 | WI | INJURY | 0 | 1 | — | — | — | — |
| Oct 7, 2011 | WI | INJURY | 0 | 1 | — | — | — | — |
| Oct 29, 2010 | WI | TOW | 0 | 0 | — | — | — | — |
| Jan 12, 2010 | WI | TOW | 0 | 0 | — | — | — | — |
| Jun 26, 2007 | WI | FATAL | 1 | 1 | — | — | — | — |
Enforcement Actions
1 closed case — FMCSA civil penalties
1 Enforcement Case
fmcsa-enforcement
| Case Number | Closed Date | Violation Code(s) | Settlement | Subject Type |
|---|---|---|---|---|
| WI-2024-0033-WI5025 | Jun 13, 2024 | 382.305 | $9,390 | Carrier |
Compliance Timeline
15 events merged from authority, insurance, enforcement, OOS, crash, MCS-150, and safety rating records
Related Records
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CityEntities in MENOMONEE FALLS, WI
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Crashes14 crash records
FMCSA Crash File
Inspections10 inspection records
Full inspection history
StationMENOMONEE FALLS WI
6 inspections at this station
StationMEQUON WI
1 inspection at this station
StationWAUKESHA WI
1 inspection at this station
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FMCSA Company Census File
Generated from 24-hour old database. Contact info and fleet counts may lag.
Updated 1 weeks ago
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FMCSA Insurance Filings
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Refresh dataLast updated: Apr 5, 2026