Carrier profile · USDOT 1131139 · Updated Jun 13, 2026
Steven M Mezynieski Inc
DBA SOUTHAMPTON EXCAVATION & SITE DEVELOPMENT
9 power unitsLocal · 2 statesSOUTHAMPTON, NY50/100
AUTHORITY STATUS UNKNOWN
Equipment
Haulable capacity (power units only — trailers are towed context), equipment mix, and the VIN-decoded unit roster. Click any VIN to trace that unit across every carrier that has run it.
Capacity· power units = haulable capacity; trailers are towed
- Registered power units (MCS-150)
- 9
- Observed power (24 mo)
- 2
- Trailers (towed)
- 2
Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.
Unit roster· VIN-decoded from inspections · NHTSA vPIC
| VIN | Type | Year | Make | Model | Insp. | Last seen |
|---|---|---|---|---|---|---|
| 1M1PN4GY9MM008647View sourced platform decode | Power unit | 2021 | MACK | — | 1 | Mar 25, 2026 |
| 5MADS35389C017942View sourced platform decode | Trailer | 2009 | MACK TRAIL | — | 1 | Mar 25, 2026 |
| 1E1D1S386JR063244View sourced platform decode | Trailer | 2018 | OTHR | — | 1 | Sep 2, 2025 |
| 1M1PN4GY3LM004978View sourced platform decode | Power unit | 2020 | MACK | — | 1 | Sep 2, 2025 |
Showing 4 · most-inspected first.