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VALIDATED

TIM MAASSEN

Trust Score

87 Excellent
Excellent Why this score?
Company CheckTIM MAASSEN · DOT 1126016

Private carrier, runs its own trucks and hauls its own freight

DBA: WEST ROCK CONSTRUCTION INC
3616 CHESTNUT AVE, ROCK VALLEY, IA, 51247
DOT# 1126016 Rock Valley, Iowa
PRIVATE CARRIER
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9
Power Units
7
Drivers
0
Crashes (24-Month)
Not reported
Insurance
Not Rated
Safety Rating
8
Inspections
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Public record

4 events tracked · latest Aug 21, 2025 Show details
Safety & compliance 4
  • Aug 21, 2025
    Roadside inspection, 4 out-of-service violations.
  • Jan 9, 2025
    Roadside inspection, 7 out-of-service violations.
  • Oct 31, 2024
    Roadside inspection, 1 out-of-service violation.
  • Oct 24, 2024
    Roadside inspection, 3 out-of-service violations.
Public FMCSA record · blue clean · orange change · red risk.

Company Information

Legal NameTIM MAASSEN
DBA NameWEST ROCK CONSTRUCTION INC
DOT Number1126016
Entity TypePrivate Carrier
Operating StatusA - Active
LocationRock Valley, Iowa
Added05/05/2003
MCS-15003/17/2026

Contact Details

Physical Address3616 CHESTNUT AVE, ROCK VALLEY, IA, 51247
Mailing Address1995 350TH STREET, ROCK VALLEY, IA, 51247

Operating Authorities

Authority TypePRIVATE PROPERTY
Carrier OperationA - Interstate

Operation Classification

Private (Property)Private Only

SMS BASIC Scores

FMCSA safety categories, last 24 months. Above Cutoff = FMCSA flags a problem · Below cutoff = within limits · Clean = no violations.
Unsafe Driving
measure .44 · 1 insp with violations
Below cutoff
Hours-of-Service Compliance
measure 0 · 0 insp with violations
Clean
Driver Fitness
measure 2.8 · 1 insp with violations
Below cutoff
Controlled Substances / Alcohol
measure 0 · 0 insp with violations
Clean
Vehicle Maintenance
measure 23 · 4 insp with violations
Below cutoff
Source: FMCSA SMS, updated monthly.

Mileage

Annual Mileage10,000 miles
Mileage Year2025
VMT SourceMCS-150 Form

Drivers

7
Interstate
0
Intrastate
0
CDL
7
Total
Interstate >100mi0
Interstate <100mi0
Intrastate >100mi0
Intrastate <100mi0

Safety Summary

Safety RatingNot Rated
Total Crashes (24-mo)0
Fatal0
Driver OOS25.0% avg 5.5%
Vehicle OOS100.0% avg 20.7%
SmartWay PartnerNo

Quick Facts

StatusActive
TypePrivate Carrier
Fleet9 units
Drivers7
Mileage10,000 mi
MCS-15003/2026

Safety & Inspection Data

Crash Summary
Total Crashes (24-mo)0
Fatal0
Injury0
Tow-Away0
Driver Inspections
Total4
Out of Service1
OOS Rate25.0%
National Avg5.5%
Above National Average
Vehicle Inspections
Total4
Out of Service4
OOS Rate100.0%
National Avg20.7%
Above National Average

Safety Trends by Year

Roadside inspections and crashes on file, year over year. The red portion of each inspection bar is the out-of-service share; ▲/▼ compares to the prior year.

Inspections · red = OOS
2023
1 · 1 OOS -
2024
2 · 2 OOS
2025
2 · 2 OOS =
Crashes

No crashes on record.

Based on FMCSA crash and roadside inspection records (rolling 3-year window). The latest year may be partial.

Out-of-Service Summary Last 24 months

Live FMCSA roadside inspections through Aug 2025, 4 inspections, 4 resulted in out-of-service (100% OOS rate).

Driver Out-of-Service 1 OOS
Vehicle Out-of-Service 14 OOS
Live FMCSA roadside inspection records, refreshed monthly.

Roadside Violations by Safety Category Last 24 months

35 roadside violations across 4 inspections, grouped into FMCSA safety-behavior categories. The shaded portion shows how many were serious enough to result in an out-of-service order.

ViolationsOut-of-service
Vehicle Maintenance 30 violations · 14 OOS
Unsafe Driving 3 violations · 0 OOS
Driver Fitness 2 violations · 1 OOS
Categories follow FMCSR violation parts (Part 393/396 = Vehicle Maintenance, Part 395 = HOS; "Other" = general/administrative parts such as 390). Raw violation counts and out-of-service results, not FMCSA percentile rankings, which are not published for property carriers.

Inspection Records (5)

DateStateLevelLocationViolationsOOSDriver ViolDriver OOSVehicle ViolVehicle OOSHazMat
08/21/2025 NE Full (Level I) ON US HWY 75, 4564 FEET NORTH 13 4 0 1 0 3 - Detail
01/09/2025 IA Full (Level I) HWY 75 AND 110TH 15 7 0 0 15 7 - Detail
10/31/2024 IA Walk-Around (Level II) SB HWY 18 / 270TH ST 2 1 1 0 1 1 - Detail
10/24/2024 IA Walk-Around (Level II) HWY 18 NB AT 250TH 5 3 0 0 5 3 - Detail
07/18/2023 IA Walk-Around (Level II) HWY 10 WB AND HWY 75 5 1 0 0 5 1 - Detail
Detailed Inspection Report

Safety Performance Percentiles

FMCSA SMS percentile rankings. Higher percentile = worse performance relative to peers.

Total Inspections4
Unsafe Driving 1 viols
Driver Fitness 1 viols
Vehicle Maintenance 4 viols

Licensing & Insurance

No insurance history records.

No active insurance policies.

No authority history.

No revocation records.

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