US · FMCSA ACTIVE AUTHORITY INSURED HAZMAT
DIAMOND MATERIALS LLC
Wilmington, DE 19801 · DOT 45597 · MC76472
Company profile
Web-discovered · as of 2026-07-30
Based in New Castle, Delaware, Diamond Materials LLC is a specialized construction services provider that operates a fleet of heavy-duty trucks primarily supporting paving and heavy civil infrastructure construction projects. Established in 1974, it is part of the Diamond Group.
Fleet use
Specialized service
Operating scope
Local
Service model
dedicated
Equipment
dump, specialized
Ownership
Private
HQ · 2225 New Castle Ave, New Castle, DE 19720
Active site and recent news indicate ongoing infrastructure projects in DE.
Registry record
Source FMCSA · as of 2026-07-08
Fleet size
139
power units · corroborated
Activity
road freight carrier
for hire licence
In operation since
1974
117 drivers
US compliance
Source FMCSA L&I / SAFER · as of 2026-07-12
Operating authority
Active
Insurance on file
Yes (BIPD)
min cover $750k
Out of service
No
Safety rating
CONDITIONAL
Crashes (24 mo)
3
0 fatal · 1 injured
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