Carrier profile · USDOT 343395 · Updated Jun 13, 2026
ISSC INC
DBA SEAPORT STEEL CO
26 power unitsavg 10.5 yrRegional · 4 statesSEATTLE, WA86/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORY
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 3660 EAST MARGINAL WAY S, SEATTLE, WA, 98134
- Mailing address
- 3660 E MARGINAL WAY S, SEATTLE, WA, 98134
- Operation
- Interstate
Contact
- Phone
- (206) 224-9093
- Fax
- (206) 343-1366
- Web domain
- seaportsteel.com
Registration
- Officers
- Rory James · Nate Highlander
- USDOT / docket
- 343395
- First registered
- Feb 8, 1989
- Last MCS-150
- Feb 13, 2025 · 644,622 mi (2024)
- FMCSA safety rating
- Satisfactory · Jan 22, 2009
- D-U-N-S
- 102886215
Fleet (self-reported · MCS-150)
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.