Carrier profile · USDOT 2160346 · Updated Sep 6, 2026
Rock Spring Contracting LLC
16 power unitsavg 7.2 yrRegional · 3 statesKENSINGTON, MD94/100
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)
- 16
- Observed power (24 mo)
- 11
- Trailers (towed)
- 0
Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.
Fleet age· model years · decoded VINs
Average age
2026
Newest model yr
2014
Oldest model yr
72.7%
VINs decoded
Unit roster· VIN-decoded from inspections · NHTSA vPIC
| VIN | Type | Year | Make | Model | Insp. | Last seen |
|---|---|---|---|---|---|---|
| 1HTKHPVK3LH272538View sourced platform decode | Incomplete - Chassis Cab (Single Cab) | 2020 | GM | GM515 | 4 | Aug 6, 2026 |
| JHHRDM2H7HK004128View sourced platform decode | Truck | 2017 | HINO | XJC720 / XFC720 | 4 | Jan 14, 2026 |
| 1FDWE3FL1EDA33888View sourced platform decode | Incomplete - Cutaway | 2014 | FORD | E-350 | 3 | Dec 22, 2025 |
| 1M2AX04CXHM036783View sourced platform decode | Truck | 2017 | MACK | GU (Granite) | 3 | Dec 4, 2025 |
| 54DK6S1F0TSA00576View sourced platform decode | Power unit | 2026 | ISUZU | — | 2 | Jul 10, 2026 |
| 1M2GR2GC7KM010757View sourced platform decode | Truck | 2019 | MACK | Granite | 2 | Dec 22, 2025 |
| 5PVNJ8JM4K4S51005View sourced platform decode | Incomplete - Chassis Cab (Single Cab) | 2019 | HINO | Conventional Type Truck | 2 | May 30, 2025 |
| 1M2AX04CXFM023285View sourced platform decode | Truck | 2015 | MACK | GU (Granite) | 1 | Aug 27, 2026 |
| 1M2AX04C9JM038711View sourced platform decode | Power unit | 2018 | MACK | — | 1 | Jun 15, 2026 |
| 1FDNF6AN6SDF03427View sourced platform decode | Power unit | 2025 | FORD | — | 1 | Apr 17, 2026 |
| 5PVNJ8JV9H4S65662View sourced platform decode | Incomplete - Chassis Cab (Single Cab) | 2017 | HINO | Conventional Type Truck | 1 | Nov 25, 2025 |
Showing 11 · most-inspected first.