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STACK BROS MECHANICAL CONTRACTORS INC

DBA STACK BROS

USDOT 1280175 · MC-1583591 · 3119 HILL AVE, SUPERIOR, WI 54880

80Review firstModerate riskVektor risk score · 0–100

Generated July 28, 2026 from the live FMCSA / NHTSA record. Decision support — not an FMCSA safety rating or a recommendation to use or avoid any carrier. Verify authority & insurance before tendering.

Watch · 2

  • Vehicle out-of-service rate well above average — 42.9% of vehicle inspections were placed out of service vs the 22.3% national average.
  • Driver out-of-service rate above average — 12.5% vs the 6.7% national average.

In good standing · 3

  • Active operating authority — Active for-hire authority is on file with FMCSA.
  • Insurance on file — BIPD (liability) insurance is on file with FMCSA.
  • Established 22 years — Operating authority has been on file since 2004.

Identity & authority

Operating status
Active
Common authority
Active
Contract authority
None
Broker authority
None
Safety rating
Not rated
Authority age
21 yr
Registered
2004-08-27
Out-of-service
No
Phone
(715) 398-2964
Email
bill@stackbr.com
Website
stackbr.com
Address
3119 HILL AVE, SUPERIOR, WI 54880

Fleet

Power units
134
Drivers
143
Observed units
10
Avg fleet age
14.5 yr

Insurance

Auto-liability on file
Yes
BIPD limit
Cargo on file
No
Cargo limit
Bond on file
No
Lapses
0

Safety · trailing 24 months

Vehicle OOS
42.9% (nat'l 22.26%)
Driver OOS
12.5% (nat'l 6.67%)
Inspections
8
Crashes
0
Fatal crashes
0
CSA BASICMeasurePercentileSourceAlert
Unsafe Driving0.151%Vektor est.
Hours-of-Service0.3517%Vektor est.
Driver Fitness0.5720%Vektor est.
Controlled Substances00%Vektor est.
Vehicle Maintenance10.4577%Vektor est.