Tri County Materials

$39.1M revenue • 158 employees • 3700 Bay Rd, Dover, DE, 19901, United States

Last Updated Jun 2, 2026

Company Overview

Company Name

Tri County Materials

Address

3700 Bay Rd, Dover, DE, 19901, United States

Approx. Annual Revenue

$39.1M

Employees

158

Established

2001

About Tri County Materials

Diamond Materials is a leading heavy highway and site development company based in Dover, Delaware. The company offers a wide range of services, including asphalt production, soil cement stabilization, utility construction, marine services, on-site crushing and screening, cold in-place recycling, concrete curb and sidewalk installation, demolition, clearing and grubbing, milling, and site development.

Frequently Asked Questions about Tri County Materials

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Key Decision Makers

Jason Holdren Owner
Joshua Crane Vice Presdent
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