Carrier profile · USDOT 145252 · Updated Jun 13, 2026
The Diamond Engineering Co
68 power unitsavg 15.2 yrLocal · 1 statesGRAND ISLAND, NE86/100
AUTHORITY STATUS UNKNOWNRATED CONDITIONAL
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
- 1521 W ANNA, GRAND ISLAND, NE, 68801
- Mailing address
- PO BOX 1327, GRAND ISLAND, NE, 68802
- Operation
- Interstate
Contact
- Phone
- (308) 382-8362
- Web domain
- diamondeng.com
Registration
- Officers
- Douglas Sass · James Harder
- USDOT / docket
- 145252
- First registered
- Jun 1, 1974
- Last MCS-150
- Dec 18, 2025 · 32,000 mi (2024)
- FMCSA safety rating
- Conditional · May 6, 2010
- D-U-N-S
- 8910143
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.