Underdown Trenching Inc (DOT# 4482322) – FMCSA Carrier Profile
DOT# 4482322● Active
Updated: 2026-03-09
Underdown Trenching Inc is a registered motor carrier with the FMCSA under USDOT number 4482322. The company operates from Fenton, MO and maintains an active operating status with 45 power units and 33 drivers on record.
Safety Rating
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Company Information
Address1150 Quail Hollow Dr, Fenton, MO, 63026-4956
Phone(636) 343-1321
Entity TypePrivate Property
OperationInterstate
Power Units45
Drivers33
MCS-150 FiledOctober 16, 2025
Inspection Summary
All-time Inspections
All-time4
Total
4
OOS
0
Driver OOS
4
Vehicle OOS
The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service.
BASICS Safety Scores
BASICS Scores
Higher = more risk · FMCSA Behavior Analysis and Safety Improvement Categories0.0
Unsafe Driving
0.0
HOS Compliance
0.0
Driver Fitness
0.0
Controlled Substances
16.3
Vehicle Maintenance
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Frequently Asked Questions
What is USDOT Number 4482322?
USDOT number 4482322 is assigned to Underdown Trenching Inc, an active motor carrier registered with the FMCSA, based in Fenton, MO.
How many inspections has Underdown Trenching Inc had?
Underdown Trenching Inc has recorded 4 total inspections with 4 out-of-service orders, representing an OOS rate of 100.00%.
Where is Underdown Trenching Inc located?
Underdown Trenching Inc is headquartered at 1150 Quail Hollow Dr, Fenton, MO 63026-4956.
Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 4482322 · Last updated: 2026-03-09. View official FMCSA record →