US · FMCSA ACTIVE HAZMAT
DAVID MASON AND ASSOCIATES INC
Saint Louis, MO 63110-1244 · DOT 2456474
Company profile
Web-discovered · as of 2026-07-30
David Mason + Associates (DMA) is a multi-disciplinary engineering and surveying firm headquartered in Saint Louis, MO, operating a private fleet of 60 trucks and 100 drivers for transporting equipment and materials to project sites.
Fleet use
Private fleet
Operating scope
Regional
Service model
own account
Equipment
specialized
Ownership
Private
Employees
51-200
HQ · 2000 Market St, Saint Louis, MO 63103, USA
Active website, LinkedIn, and recent job postings confirmed as of July 2026.
Registry record
Source FMCSA · as of 2026-08-01
Fleet size
60
power units
Activity
road freight carrier
private licence
In operation since
2013
100 drivers
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