SOUTHERN WISCONSIN AGGREGATE CORPORATION
Based in JANESVILLE, Wisconsin, SOUTHERN WISCONSIN AGGREGATE CORPORATION is a motor carrier registered under USDOT 1930579. The company operates 15 power units and employs 17 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
- SOUTHERN WISCONSIN AGGREGATE CORPORATION
- USDOT Number
- 1930579
- Entity Type
- CARRIER
- Address
- 348 N US HIGHWAY 14
JANESVILLE, WI 53546 - Phone
- (608) 752-4322
- Carrier Operation
- Intrastate Only (Non-Hazmat)
- Last MCS-150 Update
- October 6, 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
348 N US HIGHWAY 14, JANESVILLE, WI 53546
Frequently Asked Questions
What is SOUTHERN WISCONSIN AGGREGATE CORPORATION's USDOT number?
Is SOUTHERN WISCONSIN AGGREGATE CORPORATION a safe trucking company?
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Source: FMCSA Safety and Fitness Electronic Records (SAFER) System