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Issc Inc (DOT# 343395) – FMCSA Carrier Profile

doing business as SEAPORT STEEL CO
DOT# 343395● Active
Updated: 2026-03-09

Issc Inc is a registered motor carrier with the FMCSA under USDOT number 343395. The company operates from Seattle, WA and maintains an active operating status with 26 power units and 21 drivers on record.

Safety Rating

FMCSA Safety Rating
✓ Satisfactory
Rated: January 22, 2009

Issc Inc holds a "Satisfactory" safety rating from the Federal Motor Carrier Safety Administration (FMCSA). This rating indicates that the carrier has been found to comply with federal safety regulations based on the most recent compliance review conducted by FMCSA. View official FMCSA record →

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Company Information

Address3660 East Marginal Way S, Seattle, WA, 98134
Phone(206) 224-9093
Emailphillipm@seaportsteel.com
Entity TypePrivate Property
OperationInterstate
Power Units26
Drivers21
MCS-150 FiledFebruary 13, 2025
Annual Mileage644,622 mi (2024)
All carriers in Washington→Carriers in Seattle, WA→

Inspection Summary

All-time Inspections
All-time
44
Total
13
OOS
0
Driver OOS
13
Vehicle OOS
OOS Rate29.55%
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 Categories
2.1
Unsafe Driving
0.2
HOS Compliance
0.0
Driver Fitness
0.0
Controlled Substances
7.0
Vehicle Maintenance
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Frequently Asked Questions

What is USDOT Number 343395?
USDOT number 343395 is assigned to Issc Inc, an active motor carrier registered with the FMCSA, based in Seattle, WA.
What is the safety rating of Issc Inc?
Issc Inc has a safety rating of Satisfactory as of January 22, 2009.
How many inspections has Issc Inc had?
Issc Inc has recorded 44 total inspections with 13 out-of-service orders, representing an OOS rate of 29.55%.
Where is Issc Inc located?
Issc Inc is headquartered at 3660 East Marginal Way S, Seattle, WA 98134.

Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 343395 · Last updated: 2026-03-09. View official FMCSA record →