MIDWESTERN MECHANICAL INC
USDOT 1030043 • 4105 N LEWIS AVE, SIOUX FALLS, SD, 57104
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
1,030,043
Status
ACTIVE
Operation
Interstate
State
Phone
6053393963
Email
Power Units (MCS-150)
92
Drivers (MCS-150)
150
MCS-150 Mileage
1,500,000
Physical Address
4105 N LEWIS AVE, SIOUX FALLS, SD, 57104
Contact
Phone: 6053393963
Email: [email protected]
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
52%
Hours of Service
N/A
Unsafe Driving
N/A
Higher percentile = worse safety performance relative to peers. Scores at or above 75% trigger FMCSA alerts.
Inspections
9
Violations
19
5 OOS
Vehicle OOS %
33.3%
Above nat'l avg (23.4%)
Driver OOS %
11.1%
Above nat'l avg (6.7%)
Power Units (MCS-150)
92
Drivers (MCS-150)
150
Crash Records
0
Inspection Activity (24 months)
Monthly inspection counts with OOS months highlighted. Hover bars for details.
May
Jun
Jul
Aug
Sep
Oct
Nov
1
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
1
Sep
1
Oct
Nov
Dec
Jan
1
Feb
Mar
Apr
Clean monthMonth with OOSBased on latest 9 of 9 inspection records
Inspection Activity Map
3 states • 9 inspections
None Low Medium High🚛 Home base
Violation Summary (19 violations from 9 inspections)
fmcsa-inspection-file
| Code | Description | # Violations | # OOS | Severity Wt | BASIC |
|---|---|---|---|---|---|
| FMCSR:392.2 | Operating a CMV while ill or fatigued | 2 | 0 | 8 | Unsafe Driving |
| FMCSR:393.95(f) | Emergency Equipment - Stopped vehicle warning devices missing or improper | 2 | 0 | — | Vehicle Maintenance |
| FMCSR:396.17(c) | No proof of periodic inspection | 2 | 0 | 3 | Vehicle Maintenance |
| FMCSR:393.205(c) | Wheel fasteners loose and/or missing | 2 | 1 | — | Vehicle Maintenance |
| FMCSR:393.43DBMA | Brake - relay emergency valve | 1 | 1 | 7 | Vehicle Maintenance |
| FMCSR:396.17C-PI | No proof of periodic inspection | 1 | 0 | 3 | Vehicle Maintenance |
| FMCSR:393.11A1-LLPL | Lighting devices/reflectors | 1 | 0 | 3 | Vehicle Maintenance |
| FMCSR:393.60D | Glazing/window obstructions | 1 | 0 | 4 | Vehicle Maintenance |
| FMCSR:383.23A2-LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | 1 | 1 | — | Driver Fitness |
| FMCSR:393.95F | Emergency Equipment - Stopped vehicle warning devices missing or improper | 1 | 0 | — | Vehicle Maintenance |
| FMCSR:393.95(a) | Emergency equipment - fire extinguisher missing/defective | 1 | 0 | 5 | Vehicle Maintenance |
| FMCSR:393.43 | Brake - relay emergency valve | 1 | 1 | 7 | Vehicle Maintenance |
| FMCSR:383.71(h) | License (CDL) - CDL or CLP holder possesses a valid medical certificate but is not on file with the issuing state driver's licensing agency as required | 1 | 0 | — | Driver Fitness |
| FMCSR:391.41(a)(1) | 391.41(a)(1) | 1 | 0 | — | Driver Fitness |
| FMCSR:177.834(a) | General loading/unloading hazmat | 1 | 1 | 6 | Hazardous Materials |
Peer Context
This carrier vs national averages. Lower is better for all metrics.
Vehicle OOS Rate
33.3%vs nat'l 23.4%
+9.9 pts above avg
Driver OOS Rate
11.1%vs nat'l 6.7%
+4.4 pts above avg
Violations / Inspection
2.11vs nat'l 1.80
+0.31 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 (9 inspections)
fmcsa-inspectionsApr 5, 2026
| Date | Report # | Station | State | Level | Vehicle | Violations | Top Codes | OOS |
|---|---|---|---|---|---|---|---|---|
| Feb 2, 2026 | 86942727 | VALLEY SPRINGS SD | SD | Level 2 | CHEVROLET STRAIGHT TRUCK | 5 | 393.43DBMA, 396.17C-PI, 393.11A1-LLPL | Yes |
| Oct 8, 2025 | 86000498 | VALLEY SPRINGS SD | SD | Level 1 | UNPUBLISHE SEMI-TRAILER | 1 | 393.95F | No |
| Sep 17, 2025 | 85798962 | VALLEY SPRINGS SD | SD | Level 1 | UNPUBLISHE FULL TRAILER | 0 | — | No |
| Dec 11, 2024 | 83359954 | VALLEY SPRINGS SD | SD | Level 3 | CHEVROLET STRAIGHT TRUCK | 0 | — | No |
| Nov 28, 2023 | 80249703 | VALLEY SPRINGS SD | SD | Level 1 | UNPUBLISHE SEMI-TRAILER | 0 | — | No |
| Aug 31, 2023 | 79582366 | Roadside | IA | Level 2 | LAMAR STRAIGHT TRUCK | 7 | 396.17(c), 392.2, 393.95(a) | Yes |
| Jul 25, 2023 | 79268068 | Roadside | IA | Level 3 | MIDSOTA FULL TRAILER | 1 | 392.2 | No |
| Jun 12, 2023 | 78880617 | WORTHINGTON SCALE | MN | Level 1 | GMC STRAIGHT TRUCK | 5 | 393.205(c), 391.41(a)(1), 393.95(f) | Yes |
| Apr 5, 2023 | 78288959 | SIOUX FALLS POE | SD | Level 3 | — | 0 | — | No |
Inspection analytics
Monthly cadence, frequent stations, and violation mix
Inspections per month (24 mo)
4 total · 25.0% OOS
2024-122026-02
InspectionsOOS
Most frequent inspection stations
Violations by BASIC category
Related Records
Related records
StateAll entities in South Dakota
Browse carriers, brokers, and FFs in SD
CityEntities in SIOUX FALLS, SD
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Crashes0 crash records
FMCSA Crash File
Inspections9 inspection records
Full inspection history
StationVALLEY SPRINGS SD
5 inspections at this station
StationWORTHINGTON SCALE
1 inspection at this station
StationSIOUX FALLS POE
1 inspection at this station
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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
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FMCSA Insurance Filings
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FMCSA Vehicle Inspection File
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Refresh dataLast updated: Apr 5, 2026