CS
CORNERSTONE SITE SERVICES LLC
CarrierIntel Score: 70/100. 9 inspection violations in the past 12 months. Updated Oct 2026.
DOT 2520567ActiveIntrastate HazmatROUND ROCK, TX
COMPANY
Authority since
—
MCS-150
2026-10-08 · 210,000 mi (2026)
Fleet
16 units · 5 trailers · 12 drivers
ADDRESS
Physical
4801 UNIVERSITY BLVD
ROUND ROCK, TX 78665-2059
ROUND ROCK, TX 78665-2059
Mailing
4801 UNIVERSITY BLVD #410
ROUND ROCK, TX 78665
ROUND ROCK, TX 78665
CONTACT
Phone
5124101843
Email
info@cornerstoness.com
OFFICERS
Primary Officer
GREG HAMPTON
Title
COOMANAGING PARTNER
OPERATION & CARGO
Operation classification
Private Property
Specialty
Auto Transport
Cargo types
6
Motor VehiclesBuilding MaterialsMachinery, Large ObjectsLiquids / GasesConstructionOther: WATER
Self-reported by the company on its latest MCS-150 filing (FMCSA census). Reflects what the carrier is authorized and equipped to haul, not actual recent loads. Specialty is our summary of the declared cargo mix.
AUTHORITY
147 mo
Since USDOT registration
INSURANCE
Verification needed
No federal insurance filing found. Whether this carrier must file one is unclear from its registration; verify coverage through state records or the insurer.
RISK GRADE
Minimal Risk
0 risk factors · 1 strengths
OOS RATE
22.2%
2 / 9 inspections
CarrierIntel Safety Score
Rolling 12-month heuristic based on inspections, OOS, violations, crashes & fatalities. Not the official FMCSA SMS score.
70
out of 100
Good
Markers: OOS inspection Crash Fatality
Fleet vs Reality
last 12 months · power-unit VINs from roadside inspections Checking local VIN index…
Minimal Risk
0 risk factors · 1 strengths · 2 data pointsSAFETY PERFORMANCE
Crash Record
5 crashes · 0 fatal · 4 with injuries · 5 tow-away
Clean Inspection Rate
78% — 7 clean of 9 inspections
Out-of-Service Rate
22.2% — driver OOS 0 insp., vehicle OOS 2 insp.
COMPLIANCE & AUTHORITY
USDOT Registration
Status: Active
Operating Authority
No operating authority on file
Out-of-service orders
None on record
Authority Events
No authority history events
MCS-150 Filing
Last filed 2026-10-08
INSURANCE
Active Coverage
Verification needed — No federal insurance filing found. Whether this carrier must file one is unclear from its registration; verify coverage through state records or the insurer.
SUMMARY
No crashes in the last 24 months
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