ISSC INC
USDOT 343395 · Doing business as SEAPORT STEEL CO
Active, interstate carrier, mid-size fleet (26 power units) — safety rating: satisfactory.
Vetting summary
At a glance
- Out-of-service rate26.1% vs 19.1% national avg
- Crashes (24 months)1 reported — involvement does not imply fault
These signals summarize the records shown below — they are a starting point for your own checks, not a judgment of the carrier.
Registration
Carrier identity
| USDOT Number | 343395 |
|---|---|
| MC Number | — |
| Legal Name | ISSC INC |
| DBA Name | SEAPORT STEEL CO |
| Entity Type | CORPORATION |
| Phone | 2062249093 |
| Address | 3660 EAST MARGINAL WAY S, Seattle, WA, 98134 |
Status
Authority & safety
| Operating Status | Active |
|---|---|
| Operation Type | Interstate |
| Safety Rating | S — Satisfactory (rated 20090122) |
| Hazmat Flag | false |
Safety ratings: S = Satisfactory, C = Conditional, U = Unsatisfactory. A carrier with no rating has not been through a full FMCSA compliance review — this is common and not itself a red flag.
Our scoring
Safety scores
| Unsafe Driving | 82 / 100 |
|---|---|
| Hours-of-Service Compliance | 82 / 100 |
| Driver Fitness | 0 / 100 |
| Controlled Substances & Alcohol | 0 / 100 |
| Vehicle Maintenance | 86 / 100 |
Scores are 0-100 rankings computed by us from public FMCSA inspection measures; higher = worse relative to peers. Not official CSA/BASIC percentiles. How these scores are computed.
Safety events
Inspections & crashes (last 24 months)
| Inspections | 46 |
|---|---|
| Out-of-Service Rate | 26.1% vs 19.1% national average |
| Crashes | 1 total (0 fatal, 1 with injuries, 1 towaway) |
- 2026-05-01 — WA — 1 injured, towaway
Most frequent violation categories: 47 (12), 25 (8), 16 (7).
Crash involvement does not imply fault. FMCSA crash records list all reportable crashes involving a carrier, regardless of who caused them.
Equipment
Fleet & operations
| Power Units (trucks) | 26 |
|---|---|
| Drivers | 21 |
| Recent Annual Mileage | 644,622 |
| Last MCS-150 Filing | 13-FEB-25 |
ISSC INC operates 26 power units — a larger fleet than 98% of carriers registered in WA.
Nearby
Other carriers in Seattle, WA
- PACIFIC NORTHWEST BELL TELEPHONE CO — USDOT 28170, 4228 power units
- AIRBORNE EXPRESS INC — USDOT 12096, 2070 power units
- KING COUNTY METRO TRANSIT — USDOT 506909, 1103 power units
- TRIPLE B CORPORATION — USDOT 335669, 396 power units
- THE BOEING COMPANY — USDOT 38588, 295 power units
Browse all carriers in Seattle, WA or all WA carriers.