US · FMCSA ACTIVE
UNDERDOWN TRENCHING INC
Fenton, MO 63026-4956 · DOT 4482322
Company profile
Web-discovered · as of 2026-07-30
Fenton, MO-based utility construction contractor specializing in underground and aerial telecommunications infrastructure. Operates a private fleet for directional boring, excavation, and fiber installation services in the Greater St. Louis area.
Fleet use
Specialized service
Operating scope
Regional
Equipment
specialized
Ownership
Private
Employees
51-200
Networks & associations
IEC of Greater St. Louis
Industries served
telecommunicationsconstruction
HQ · 1150 Quail Hollow Dr, Fenton, MO 63026
Active site and LinkedIn profile show ongoing operations, 2026 job postings.
Registry record
Source FMCSA · as of 2026-07-08
Fleet size
45
power units
Activity
road freight carrier
private licence
In operation since
2025
33 drivers
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