USDOT 2520567 · Intrastate (Non-Hazmat) · Texas

Cornerstone Site Services LLC

US DOT2520567

Operating authorityNo for-hire authority on file

Insurance on fileNot on file

Safety ratingCheck on SAFER →

OperationIntrastate (Non-Hazmat)

Census statusActive

ClassificationPrivate carrier

Power units (fleet)16

Drivers12

LocationRound Rock, TX 78665

Cargo carriedMotor Vehicles, Building materials / construction, Machinery, Large Objects, Liquids/Gases, Other

MCS-150 mileage210,000 mi (2026)

Phone (on file)(512) 410-1843

HazmatYes, hazardous materials

Sources: census record as of October 19, 2026; authority and insurance from FMCSA L&I, checked October 5, 2026; inspections and crashes from FMCSA SMS, checked October 5, 2026.

Quick answer

Cornerstone Site Services LLC is an intrastate (non-hazmat) motor carrier in Round Rock, Texas (USDOT 2520567) with no for-hire authority on file (typical for private/intrastate carriers) and a self-reported fleet of 16 power units.

Key takeaways

USDOT 2520567 is registered to Cornerstone Site Services LLC, an intrastate (non-hazmat) carrier based in Round Rock, TX.
No FMCSA operating authority on file. Interstate for-hire carriers need it; private carriers and intrastate-only carriers generally do not.
Self-reported fleet size: 16 power units and 12 drivers (FMCSA MCS-150 self-report; sanitized for plausibility).
Registered cargo types include motor vehicles, building materials / construction, machinery, large objects, liquids/gases.

Safety & inspections

Official rating on SAFER →

6InspectionsFMCSA roadside, 24 months

1 of 6Vehicle inspections with an out-of-service orderToo few inspections for a meaningful rate

0 of 6Driver inspections with an out-of-service orderToo few inspections for a meaningful rate

Source: FMCSA Safety Measurement System, roadside inspections and crashes over a ~24-month window, checked October 5, 2026. An out-of-service rate is the share of inspections in which a vehicle or driver was placed out of service. With few inspections, one result moves the rate a lot. FMCSA crash records include crashes regardless of fault. None of these figures is a safety rating. The official Satisfactory/Conditional/Unsatisfactory safety rating is issued separately. See SAFER.

About Cornerstone Site Services LLC

Cornerstone Site Services LLC is an intrastate (non-hazmat) motor carrier based in Round Rock, Texas, registered with the FMCSA under USDOT 2520567. It has no for-hire operating authority on file, which is typical for a private or intrastate carrier. The carrier self-reports a fleet of 16 power units and 12 drivers. Registered cargo includes motor vehicles, building materials / construction, machinery, large objects, liquids/gases, other. Its most recent MCS-150 filing reported 210,000 mi (2026).

Before you work with this carrier

Confirm the safety rating. Authority and insurance are shown or linked above. Open the SAFER snapshot for the official safety rating and out-of-service status.
Verify insurance is current. Coverage on file can lapse; confirm active BIPD/cargo before tendering a load.
Match authority to the work. For-hire loads need active operating authority. A USDOT number alone isn't enough.

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