Diamond Materials LLC

USDOT activeAuthority activeCarrier · InterstateHazmat
  • USDOT45597
  • MC76472
  • LocationWilmington, DE
  • Phone(302) 658-6524
  • Fleet139 power units · 117 drivers

Diamond Materials LLC (USDOT 45597, MC-76472) is an interstate motor carrier based in Wilmington, Delaware with 139 power units and 117 drivers reported to FMCSA. Its USDOT number and operating authority are active. FMCSA records list 124 roadside inspections in the last 24 months.

Verification snapshot · FMCSA data as of Nov 10, 2026

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Operating authority

Status from the FMCSA Company Census File, November 10, 2026

DocketAuthority typeStatus
MC-76472Motor Carrier of Property (except Household Goods)Active

First granted on May 26, 1982 · see full authority history.

Insurance

FMCSA licensing system (Motus), November 11, 2026

  • Liability (BIPD) required$1,000,000
  • Liability (BIPD) on file$1,000,000
  • Cargo insurance required / on fileNo / No
  • Bond required / on fileNo / No

Filings on file

TypeInsurerCoverageEffective
Liability (BIPD) BMC-91XArch Insurance Company$1,000,000Jan 1, 2012
Insurance history: 4 past filings
TypeInsurerEffectiveEndedReason
CargoSelective Way Insurance CompanyMay 23, 1997Feb 2, 2007Cancel
CargoSelective Insurance Company of AmericaJan 13, 1995May 23, 1997Replaced
Liability (BIPD)Maryland Casualty Co.Apr 1, 1988Jul 23, 2008Cancel
CargoPennsylvania Manuf. Assoc. Ins.Apr 1, 1987Jan 13, 1995Cancel

Process agent (BOC-3)

American Trucking Associations, Washington, DC

Inspections and crashes

Last 24 months · FMCSA Vehicle Inspection File and Crash File

124
Inspections
77 with no violations
2.4%
Driver out-of-service
3 of 124 inspections
9.2%
Vehicle out-of-service
8 of 87 inspections
9
Crashes
0 fatal · 5 injury · 4 tow-away

Inspected most often in: New Jersey (72), Maryland (29), Delaware (22), Pennsylvania (1).

Most recent inspection on file: November 4, 2026.

FMCSA safety rating: Conditional (rated May 26, 1988)

Inspection and crash counts come from FMCSA records and are shown as reported. They are not a safety rating. A crash record does not mean the carrier was at fault. FMCSA has not rated a carrier unless a safety rating is listed. For FMCSA’s own data and its explanation, see the FMCSA SAFER Company Snapshot.

Out-of-service rates are calculated by CheckTrucking from inspection records (driver: levels I, II, III, VI; vehicle: levels I, II, V, VI). They are not FMCSA scores.

Authority history

FMCSA licensing records (Motus and legacy L&I) · migration-only status adjustments are not shown

  1. Involuntary revocation — Common carrier authorityDiscontinued revocation on June 20, 2023
  2. Reinstated — Common carrier authority; Motor Carrier of Property (except Household Goods)
  3. Involuntary revocation — Common carrier authority
  4. Involuntary revocation — Common carrier authorityDiscontinued revocation on February 21, 1995
  5. Granted — Common carrier authorityRevoked on February 12, 2007

Fleet and operations

From the company’s own registration (Form MCS-150), updated July 2, 2025

Power units
139
Trucks
136
Tractors owned
19
Trucks owned
117
Trailers owned
35
Drivers
117
CDL drivers
117
Interstate drivers
117
Miles traveled
676,737 (2025)
Classification
Private property; Authorized for hire
Hazardous materials
Yes
USDOT registered
June 1, 1974
Address
924 S Heald St, Wilmington, DE 19801
Phone (registered with FMCSA)
(302) 658-6524

Cargo carried

  • Logs, poles, beams, lumber
  • Building materials
  • Machinery, large objects
  • Liquids / gases
  • Garbage / refuse
  • Chemicals
  • Commodities dry bulk
  • Construction

Key facts

  • USDOT number 45597 was registered on June 1, 1974.
  • Operating authority MC-76472 was first granted on May 26, 1982.
  • The company last updated its FMCSA registration (Form MCS-150) on July 2, 2025.
  • It reported 676,737 vehicle miles traveled in 2025.
  • One insurance filing is on file, including Liability (BIPD) coverage with Arch Insurance Company.
  • It had 124 roadside inspections in the last 24 months; 77 inspections recorded no violations.
  • FMCSA records list 9 reportable crashes in the last 24 months.
  • Its most recent FMCSA safety rating is Conditional, issued on May 26, 1988.
  • Its process agent filing (BOC-3) is with American Trucking Associations.

Other carriers in Wilmington, DE

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