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VALIDATED
UNDERGROUND CONSTRUCTION CO INC
Trust Score
Analyzing company data...
Company CheckUNDERGROUND CONSTRUCTION CO INC · DOT 516591
Private carrier, runs its own trucks and hauls its own freight
DBA: UNDERGROUND CONSTRUCTION
5145 INDUSTRIAL WAY, BENICIA, CA, 94510
PRIVATE CARRIER
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Due-diligence certificate
301
Power Units
471
Drivers
0
Crashes (24-Month)
Not reported
Insurance
Not Rated
Safety Rating
144
Inspections
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Public record
4 events tracked · latest May 5, 2026 ↓ Show details ↓Safety & compliance 4
- May 5, 2026Clean roadside inspection, no violations.
- Apr 30, 2026Roadside inspection, 1 violation (no OOS).
- Apr 28, 2026Roadside inspection, 1 violation (no OOS).
- Apr 16, 2026Roadside inspection, 1 violation (no OOS).
Public FMCSA record · blue clean · orange change · red risk.
Company Information
Legal NameUNDERGROUND CONSTRUCTION CO INC
DBA NameUNDERGROUND CONSTRUCTION
DOT Number516591
Entity TypePrivate Carrier
Operating StatusA - Active
LocationBenicia, California
Added03/15/1993
MCS-15001/28/2025
Contact Details
Phone(707) 746-8800
Email[email protected]
Physical Address5145 INDUSTRIAL WAY, BENICIA, CA, 94510
Mailing AddressP O BOX 2000, BENICIA, CA, 94510
Other Companies at This Address
Address5145 INDUSTRIAL WAY, BENICIA, CA 94510
1
Others here
2
Distinct phones
2
Active
| Company | DOT | Phone | Status |
|---|---|---|---|
| UNDERGROUND CONSTRUCTION CO INC this company | 516591 | (707) 746-8800 | Active |
| UNDERGROUND ELECTRIC CONSTRUCTION COMPANY LLC | 3806522 | (925) 584-5609 | Active |
Note: sharing an address is legal and common (registered agents, virtual offices, business centers). A shared address never reduces the Trust Score.
Operating Authorities
Authority TypePRIVATE PROPERTY
Carrier OperationA - Interstate
CommonNot Active
ContractNot Active
BrokerNot Active
Company Overview
UNDERGROUND CONSTRUCTION CO INC is a FMCSA-validated private carrier based in Benicia, California. The fleet consists of 301 power units and 471 drivers. Annual mileage is reported at 2,859,000 miles (2024). The carrier transports Machinery, Large Objects, Utility. With zero crashes across 144 inspections, UNDERGROUND CONSTRUCTION CO INC maintains an excellent safety record. Both driver and vehicle out-of-service rates are below the national average, indicating strong compliance. Based on authority, insurance, safety, and compliance data, UNDERGROUND CONSTRUCTION CO INC has a Trust Score of 97/100 (Excellent).
Cargo Transported
Machinery, Large ObjectsUtility
Operation Classification
Private (Property)Private Only
SMS BASIC Scores
FMCSA safety categories, last 24 months. Above Cutoff = FMCSA flags a problem · Below cutoff = within limits · Clean = no violations.
Unsafe Driving
measure .06 · 2 insp with violations
Below cutoff
Hours-of-Service Compliance
measure .16 · 2 insp with violations
Below cutoff
Driver Fitness
measure .29 · 2 insp with violations
Below cutoff
Controlled Substances / Alcohol
measure 0 · 0 insp with violations
Clean
Vehicle Maintenance
measure 1.19 · 11 insp with violations
Below cutoff
Source: FMCSA SMS, updated monthly.
Mileage
Annual Mileage2,859,000 miles
Mileage Year2024
VMT SourceMCS-150 Form
Drivers
471
Interstate
0
Intrastate
0
CDL
471
Total
Interstate >100mi0
Interstate <100mi0
Intrastate >100mi0
Intrastate <100mi0
Equipment
No equipment breakdown on file with FMCSA.
HazMatNo
Safety Summary
Safety RatingNot Rated
Total Crashes (24-mo)0
Fatal0
Driver OOS1.3% avg 5.5%
Vehicle OOS10.4% avg 20.7%
SmartWay PartnerNo
Last Review04/22/1999
Insurance
AmountNot reported
Type-
Effective-
Company-
Policy #-
Quick Facts
StatusActive
TypePrivate Carrier
Fleet301 units
Drivers471
Mileage2,859,000 mi
MCS-15001/2025
Safety & Inspection Data
Crash Summary
Total Crashes (24-mo)0
Fatal0
Injury0
Tow-Away0
Driver Inspections
Total77
Out of Service1
OOS Rate1.3%
National Avg5.5%
Below National Average
Vehicle Inspections
Total67
Out of Service7
OOS Rate10.4%
National Avg20.7%
Below National Average
HazMat Inspections
Total17
OOS0
OOS Rate0.0% (avg 4.5%)
Last FMCSA Review: 04/22/1999
Safety Trends by Year
Roadside inspections and crashes on file, year over year. The red portion of each inspection bar is the out-of-service share; ▲/▼ compares to the prior year.
Inspections · red = OOS
2023
32 · 2 OOS -
2024
51 · 3 OOS ▲
2025
36 · 6 OOS ▲
2026
8 · 0 OOS ▼
Crashes
No crashes on record.
Based on FMCSA crash and roadside inspection records (rolling 3-year window). The latest year may be partial.
Out-of-Service Summary Last 24 months
Live FMCSA roadside inspections through May 2026, 72 inspections, 6 resulted in out-of-service (8.3% OOS rate).
Vehicle Out-of-Service
7 OOS
Live FMCSA roadside inspection records, refreshed monthly.
Roadside Violations by Safety Category Last 24 months
37 roadside violations across 72 inspections, grouped into FMCSA safety-behavior categories. The shaded portion shows how many were serious enough to result in an out-of-service order.
ViolationsOut-of-service
Unsafe Driving
26 violations · 1 OOS
Vehicle Maintenance
10 violations · 6 OOS
Driver Fitness
1 violation · 0 OOS
Categories follow FMCSR violation parts (Part 393/396 = Vehicle Maintenance, Part 395 = HOS; "Other" = general/administrative parts such as 390). Raw violation counts and out-of-service results, not FMCSA percentile rankings, which are not published for property carriers.
Inspection Records (100)
| Date | State | Level | Location | Violations | OOS | Driver Viol | Driver OOS | Vehicle Viol | Vehicle OOS | HazMat | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 05/05/2026 | CA | Walk-Around (Level II) | CA | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 04/30/2026 | CA | Driver-Only (Level III) | CA | 1 | 0 | 1 | 0 | 0 | 0 | - | ▲Detail |
| 04/28/2026 | CA | Driver-Only (Level III) | RAINBOW IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 04/16/2026 | CA | Full (Level I) | CORDELIA IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 04/13/2026 | CA | Driver-Only (Level III) | RAINBOW IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 03/17/2026 | CA | Full (Level I) | RAINBOW IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 03/05/2026 | CA | Full (Level I) | NIMITZ IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 03/04/2026 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 12/16/2025 | CA | Driver-Only (Level III) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 11/18/2025 | CA | Full (Level I) | RAINBOW IF | 3 | 1 | 1 | 0 | 2 | 1 | - | ▲Detail |
| 10/28/2025 | CA | Full (Level I) | RAINBOW IF (NORTHBOUND) | 1 | 1 | 0 | 0 | 1 | 1 | - | ▲Detail |
| 10/23/2025 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 10/14/2025 | CA | Walk-Around (Level II) | CORDELIA IF | 2 | 0 | 1 | 0 | 1 | 0 | - | ▲Detail |
| 10/09/2025 | CA | Full (Level I) | CORDELIA IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 10/03/2025 | CA | Full (Level I) | RAINBOW IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 09/23/2025 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 09/22/2025 | CA | Driver-Only (Level III) | CORDELIA IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 09/18/2025 | CA | Walk-Around (Level II) | I-680 NB K PLATFORM SCALES | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 09/11/2025 | CA | Walk-Around (Level II) | I680 NB WALNUT CRK PLTFM SCALE | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 07/29/2025 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 07/24/2025 | CA | Full (Level I) | CORDELIA IF | 1 | 1 | 0 | 0 | 1 | 1 | - | ▲Detail |
| 07/14/2025 | CA | Driver-Only (Level III) | PINE GROVE JUMP SCALE | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 07/08/2025 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 06/25/2025 | CA | Driver-Only (Level III) | I-680 NB @ ANDRADE RD | 1 | 0 | 1 | 0 | 0 | 0 | - | ▲Detail |
| 05/29/2025 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 05/22/2025 | CA | Walk-Around (Level II) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 05/14/2025 | CA | Full (Level I) | CORDELIA CVEF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 04/25/2025 | CA | Full (Level I) | RAINBOW IF | 3 | 0 | 0 | 0 | 3 | 0 | - | ▲Detail |
| 04/22/2025 | CA | Full (Level I) | I-580 W/B LIVERMORE PLATFORM | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 04/16/2025 | CA | Driver-Only (Level III) | RAINBOW CVEF | 1 | 1 | 0 | 0 | 1 | 1 | - | ▲Detail |
| 03/26/2025 | CA | Walk-Around (Level II) | RAINBOW IF (SOUTHBOUND) | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 03/13/2025 | CA | Walk-Around (Level II) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 03/06/2025 | CA | Walk-Around (Level II) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 03/05/2025 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 02/26/2025 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 02/21/2025 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 02/18/2025 | CA | Full (Level I) | 3950 E/B INTERSTATE 80 | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 02/13/2025 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 02/07/2025 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 02/07/2025 | CA | Walk-Around (Level II) | DESERT HILLS IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 02/05/2025 | CA | Walk-Around (Level II) | W/B ANTELOPE SCALES | 1 | 1 | 0 | 0 | 1 | 1 | - | ▲Detail |
| 01/29/2025 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 01/27/2025 | CA | Full (Level I) | CORDELIA IF | 2 | 2 | 0 | 0 | 2 | 2 | - | ▲Detail |
| 01/15/2025 | CA | Full (Level I) | CORDELIA IF | 2 | 0 | 0 | 0 | 2 | 0 | - | ▲Detail |
| 12/20/2024 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 12/19/2024 | CA | Full (Level I) | CAJON SCALES | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 12/12/2024 | CA | Walk-Around (Level II) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 12/11/2024 | CA | Full (Level I) | RAINBOW IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 12/11/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 11/14/2024 | CA | Full (Level I) | WALNUT CREEK SCALES | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 10/12/2024 | CA | Driver-Only (Level III) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 10/08/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 09/26/2024 | CA | Full (Level I) | CORDELIA IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 09/16/2024 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 09/11/2024 | CA | Walk-Around (Level II) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 09/10/2024 | CA | Full (Level I) | 3950 E/B INTERSTATE 80 | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 09/04/2024 | CA | Driver-Only (Level III) | SAN ONOFRE IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 09/04/2024 | CA | Walk-Around (Level II) | DESERT HILLS IF | 3 | 0 | 0 | 0 | 3 | 0 | - | ▲Detail |
| 08/26/2024 | CA | Full (Level I) | SAN ONOFRE IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 08/22/2024 | CA | Walk-Around (Level II) | PINE GROVE | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 08/20/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 08/19/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 08/15/2024 | CA | Walk-Around (Level II) | CHP BALDWIN PARK | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 08/15/2024 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 08/08/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 08/07/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 08/05/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 07/26/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 07/25/2024 | CA | Walk-Around (Level II) | CHOWCHILLA RIVER IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 07/22/2024 | CA | Driver-Only (Level III) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 07/16/2024 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 07/16/2024 | CA | Walk-Around (Level II) | SAN ONOFRE IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 06/26/2024 | CA | Full (Level I) | SAN DIEGO | 4 | 2 | 1 | 1 | 3 | 1 | - | ▲Detail |
| 06/25/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 06/18/2024 | CA | Driver-Only (Level III) | MURPHYS | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 06/18/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 06/12/2024 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 06/07/2024 | CA | Full (Level I) | CORDELIA IF | 2 | 1 | 0 | 0 | 2 | 1 | - | ▲Detail |
| 05/20/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 05/15/2024 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 05/09/2024 | CA | Walk-Around (Level II) | STOCKTON AREA | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 04/04/2024 | CA | Full (Level I) | MISSION GRADE IF | 1 | 1 | 0 | 0 | 1 | 1 | - | ▲Detail |
| 03/29/2024 | CA | Driver-Only (Level III) | ABERNATHY S/OF ROCKVILLE RD | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 03/19/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 03/04/2024 | CA | Walk-Around (Level II) | CHESTER | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 02/26/2024 | CA | Full (Level I) | 3950 E/B INTERSTATE 80 | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 02/26/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 02/26/2024 | CA | Walk-Around (Level II) | CONEJO IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 02/09/2024 | CA | Full (Level I) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 01/26/2024 | CA | Full (Level I) | CASTAIC IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 01/19/2024 | CA | Full (Level I) | MISSION GRADE IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 01/10/2024 | CA | Driver-Only (Level III) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 01/03/2024 | CA | Walk-Around (Level II) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 01/02/2024 | CA | Full (Level I) | CHOWCHILLA RIVER IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 01/02/2024 | CA | Walk-Around (Level II) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 12/21/2023 | CA | Driver-Only (Level III) | MURPHYS | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
| 12/11/2023 | CA | Full (Level I) | CORDELIA IF | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 11/27/2023 | CA | Driver-Only (Level III) | I-580 W/B LIVERMORE SCALES | 1 | 1 | 0 | 0 | 1 | 1 | - | ▲Detail |
| 11/04/2023 | AZ | Full (Level I) | SHEA BLVD/35TH ST | 1 | 0 | 0 | 0 | 1 | 0 | - | ▲Detail |
| 10/23/2023 | CA | Walk-Around (Level II) | CORDELIA IF | 0 | 0 | 0 | 0 | 0 | 0 | - | ▲Detail |
Detailed Inspection Report
Safety Performance Percentiles
FMCSA SMS percentile rankings. Higher percentile = worse performance relative to peers.
Total Inspections80
Unsafe Driving
2 viols
HOS Compliance
2 viols
Driver Fitness
2 viols
Vehicle Maintenance
11 viols
Licensing & Insurance
No insurance history records.
No active insurance policies.
No authority history.
No revocation records.
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