Fleet typeIdentity
Asset-based
134 power units. Brokers price each fleet type apart.
Carrier profile · USDOT 1280175 · MC-1583591 · Updated Jun 13, 2026
STACK BROS MECHANICAL CONTRACTORS INC
DBA STACK BROS
134 power unitsavg 14.5 yrLocal · 2 statesSUPERIOR, WI80/100
CARRIER ACTIVEMC-1583591 ACTIVEHAZMAT
Observed fleet · trailing 24 mo daily
134Power units
7 observed · MCS-150
3Trailers seen
Decoded · vPIC
14.5Avg age (yr)
1998–2020 · vPIC
Click to see how we scored it
Load decision · FMCSA snapshot · Jun 13, 2026
Review before loading
Operating, but with flags a broker should weigh before tendering freight.
Active operating authorityInsurance on fileVehicle out-of-service rate well above average
Watch · 2
USDOT registration2121 yr registered
Active for-hireInsurance (BIPD)$750K in force
FMCSA L&IVehicle OOS · 24-mo42.942.9 %
▲ 22.26% nat'lCrashes · fatal00
Clean · 24 moVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersOlder
14.5 yr
Model years 1998–2020 · peer benchmark unavailable.
Identity stabilityStable
21 yr unchanged
Same registration since 2004 — no chameleon / reincarnation signal.
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Verification summary
STACK BROS MECHANICAL CONTRACTORS INC (USDOT 1280175) has a Vektor safety score of 80/100 and a Review before loading verdict, from the carrier's FMCSA record refreshed Jun 13, 2026.
The carrier holds active common for-hire operating authority per FMCSA L&I as of Jun 13, 2026.
It has an active BIPD insurance filing with a $750,000 limit in force from TRAVELERS INDEMNITY COMPANY effective Sep 27, 2023 in FMCSA L&I's current snapshot as of Jun 13, 2026.
Its vehicle out-of-service rate was 42.9% over the last 24 months, versus the 22.26% CVSA national average, from FMCSA roadside-inspection data refreshed Jun 13, 2026.
The carrier received 8 roadside inspections in the last 24 months — 7 vehicle-level and 8 driver-level — across 2 states, according to FMCSA roadside-inspection data refreshed Jun 13, 2026.
The carrier has 0 reportable crashes in the last 24 months and 0 fatal crashes across the full FMCSA crash record available as of Jun 13, 2026.
It reports 134 power units and 143 drivers in its most recent MCS-150 filing dated May 27, 2025.
It has no FMCSA-assigned safety rating in the federal record refreshed Jun 13, 2026.
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Frequently asked
What is STACK BROS MECHANICAL CONTRACTORS INC's USDOT number?
STACK BROS MECHANICAL CONTRACTORS INC's USDOT number is 1280175, and its motor carrier number is MC-1583591.
Is STACK BROS MECHANICAL CONTRACTORS INC authorized to operate?
As of 2026-06-13, STACK BROS MECHANICAL CONTRACTORS INC is active in the FMCSA register with common, contract, broker operating authority on file.
What is STACK BROS MECHANICAL CONTRACTORS INC's safety record?
STACK BROS MECHANICAL CONTRACTORS INC has a 42.9% vehicle out-of-service rate (national average 22.26%) across 23 roadside inspections, with 0 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor's computed risk score is 80/100 (tier: review).
How big is STACK BROS MECHANICAL CONTRACTORS INC's fleet?
STACK BROS MECHANICAL CONTRACTORS INC operates 134 power units and 143 drivers per its most recent MCS-150 filing.
Where is STACK BROS MECHANICAL CONTRACTORS INC based?
STACK BROS MECHANICAL CONTRACTORS INC is based in SUPERIOR, WI, with roadside inspections recorded across 2 states.
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