D a Mccosker Construction Company (DOT# 632939) – FMCSA Carrier Profile
doing business as INDEPENDENT CONSTRUCTION COMPANY
DOT# 632939● Active
Updated monthly · 2026-03-09
This carrier is active with a Conditional safety rating — some safety deficiencies were noted.
D a Mccosker Construction Company is a registered motor carrier with the FMCSA under USDOT number 632939. The company operates from Concord, CA and maintains an active operating status with 70 power units and 24 drivers on record.
Safety Rating
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Company Information
Address3911 Laura Alice Way, Concord, CA, 94520
Phone(925) 686-1780
EmailJMG-1@LIVE.COM
Entity TypePrivate Property
OperationInterstate
Power Units70(Medium carrier)
Drivers24
MCS-150 FiledOctober 31, 2025
Annual Mileage609,000 mi (2025)
Inspection Summary
All-time Inspections
All-time37
Total
4
OOS
1
Driver OOS
3
Vehicle OOS
37 inspections reflects moderate road activity.
The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service. 10.8% — approaching the national vehicle OOS average of ~21%.
Crash History
Crash Records
All-time1
Total
0
Fatal
0
Injuries
0
Tow-Away
1 crash recorded. Low count, but crash data should always be reviewed alongside inspection history.
BASICS Safety Scores
BASICS Scores
Higher = more risk · FMCSA Behavior Analysis and Safety Improvement Categories0.0
Unsafe Driving
Measures violations related to speeding, reckless driving, and improper lane changes.
0.0
HOS Compliance
Tracks hours-of-service violations, including driving beyond legal limits without rest.
0.0
Driver Fitness
Reflects issues with driver qualifications, licenses, and medical certifications.
0.0
Controlled Substances
Captures drug and alcohol violations, including failed or refused tests.
1.2
Vehicle Maintenance
Reflects brake, tire, lighting, and other equipment-related inspection violations.
Scores above 65 (general freight) or 50 (passenger/hazmat) trigger an FMCSA Alert. Higher scores indicate more safety risk. National median is approximately 20–30 for active carriers.
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Frequently Asked Questions
What is USDOT Number 632939?
USDOT number 632939 is assigned to D a Mccosker Construction Company, an active motor carrier registered with the FMCSA, based in Concord, CA.
What is the safety rating of D a Mccosker Construction Company?
D a Mccosker Construction Company has a safety rating of Conditional as of June 2, 1996.
How many inspections has D a Mccosker Construction Company had?
D a Mccosker Construction Company has recorded 37 total inspections with 4 out-of-service orders, representing an OOS rate of 10.81%.
Where is D a Mccosker Construction Company located?
D a Mccosker Construction Company is headquartered at 3911 Laura Alice Way, Concord, CA 94520.
What does "Not Rated" mean?
"Not Rated" means the FMCSA has not conducted a formal compliance review for this carrier. It does not indicate a safety problem — many active carriers operate without a formal rating.
Is zero crashes always a good sign?
Generally yes, but context matters. A carrier with zero crashes and very few inspections may simply have limited road exposure. Always review crash data alongside inspection volume and fleet size.
What is a normal OOS rate?
The national average vehicle out-of-service rate is approximately 21%. Driver OOS averages around 5%. Rates significantly above these thresholds may indicate recurring compliance issues.
How often is FMCSA data updated?
FMCSA publishes updated carrier data monthly. This page reflects the most recent available snapshot, updated on the date shown above.
Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 632939 · Last updated: 2026-03-09. View official FMCSA record →