Carrier profile · USDOT 1901870 · Updated Jun 13, 2026
CORNERSTONE EXCAVATING INC
5 power unitsWASHINGTON, IA50/100
AUTHORITY STATUS UNKNOWN
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
- 1320 WEST MAIN STREET, WASHINGTON, IA, 52353
- Mailing address
- PO BOX 928, WASHINGTON, IA, 52353
- Operation
- Intrastate (Non-Hazmat)
Contact
- Phone
- (319) 653-3957
- Cell
- (319) 461-8563
- Fax
- (319) 653-9067
- office@cstoneinc.com
- Web domain
- cstoneinc.com
Registration
- Officer
- William J Miller
- USDOT / docket
- 1901870
- First registered
- Jun 12, 2009
- Last MCS-150
- Sep 23, 2025 · 120,000 mi (2024)
- FMCSA safety rating
- Not rated
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
—CDL drivers
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.