HIER DRILLING CO
Based in CASTLE ROCK, Colorado, HIER DRILLING CO is a motor carrier registered under USDOT 1203310. The company operates 8 power units and employs 11 drivers. Their vehicle out-of-service rate of 0.0% is below the national average of 20.7%, suggesting relatively well-maintained equipment. The carrier has only 0% of required liability insurance on file — a coverage gap of $750K. Our composite safety score rates this carrier at 65/100, indicating a mixed safety profile that warrants closer review.
Insurance Coverage Gap
This carrier has $0 in liability insurance on file but $750K is required — a shortfall of $750K (0% of required coverage).
Company Details
- Legal Name
- HIER DRILLING CO
- USDOT Number
- 1203310
- Entity Type
- CARRIER
- Address
- 2755 N LIGGETT RD
CASTLE ROCK, CO 80109 - Phone
- (303) 688-3012
- Carrier Operation
- Intrastate Only (Non-Hazmat)
- Last MCS-150 Update
- March 14, 2025
Inspection Record
| Type | Total | OOS | Rate | Nat'l Avg |
|---|---|---|---|---|
| Vehicle | 1 | 0 | 0.0% | 20.7% |
| Driver | 1 | 0 | 0.0% | 5.5% |
| Hazmat | 0 | 0 | 0.0% | 4.5% |
BASICs Safety Scores
Higher percentile = worse safety performance. Scores above 75% may trigger FMCSA intervention.
Location
2755 N LIGGETT RD, CASTLE ROCK, CO 80109
Frequently Asked Questions
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Source: FMCSA Safety and Fitness Electronic Records (SAFER) System