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Carrier profile · USDOT 49481 · MC-283521 · FMCSA data fetched 2026-11-08

HELFRICH BROTHERS BOILER WORKS INC

3 power units1 driversInterstateLAWRENCE, MA

Census status Active (A)MC-283521 · code A
Official links FMCSA SAFER
← Back to overviewAuthority & Insurance · USDOT 49481
02

Authority & Insurance

Operating authority by docket

No row matched this USDOT (bare or zero-padded) or its MC numbers. That alone does not prove the company has no authority — check FMCSA.

Source: Motus Carrier – All With History (inys-ebih) · raw queryDataset updated 2026-11-08 10:07 UTCFetched 2026-11-08 14:08 UTC

Authority status history

No authority status-change row matched. That does not prove there were no changes.

Source: Motus AuthHist – All With History (yu5v-wbh6) · raw queryDataset updated 2026-11-08 10:07 UTCFetched 2026-11-08 14:08 UTC

Status and reason text are shown exactly as FMCSA publishes them. The change date is FMCSA's status_change_date; “Dataset updated” is when FMCSA last published the file, and “Fetched” is when VAX read it. The two authority files are shown side by side and are not reconciled by VAX. Amounts: the dictionary says “thousands”, but published values look like dollars, so raw values are shown. Census status is not authority.

Insurance filings

No row matched this USDOT (bare or zero-padded) or its MC numbers. That does not prove the company has no insurance — check FMCSA L&I.

Source: Motus Insur – All With History (c5y8-a4uz) · raw queryDataset updated 2026-11-08 10:07 UTCFetched 2026-11-08 14:08 UTC

Filings as recorded by FMCSA — not a certificate of insurance or proof of current coverage. Amounts are source values (dictionary: thousands).

Source: Motus InsHist – All With History (3uet-3z4i) · raw queryDataset updated 2026-11-08 10:08 UTCFetched 2026-11-08 14:08 UTC

Source: InsHist – legacy (6sqe-dvqs) · raw queryDataset updated 2026-11-08 13:14 UTCFetched 2026-11-08 14:08 UTCFrozen by FMCSA since 2026-05-14

Prior policies

Insurance timeline
Hover a bar for insurer and dates.

Prior policies (3uet-3z4i + legacy 6sqe-dvqs) — effective → cancellation

UNITED FINANCIAL CASUALTY COMPANY · 2021-06-30 → 2023-12-04

NATIONAL CONTINENTAL INS. CO · 2021-06-30 → 2021-06-30

TRUMBULL INSURANCE COMPANY · 2018-06-01 → 2021-06-01

THE CHARTER OAK FIRE INSURANCE CO. · 2012-02-01 → 2014-06-28

LIBERTY INSURANCE CORPORATION · 2010-02-01 → 2012-03-10

LIBERTY INSURANCE CORPORATION · 2008-01-30 → 2010-02-01

LIBERTY INSURANCE CORPORATION · 2008-01-30 → 2008-05-31

HANOVER INSURANCE CO. · 1999-01-01 → 2008-05-14

HANOVER INSURANCE CO. · 1999-01-01 → 2008-01-30

LIBERTY INSURANCE CORPORATION · 2008-01-30 → 2008-01-30

LIBERTY INSURANCE CORPORATION · 2008-01-30 → 2008-01-30

HANOVER INSURANCE CO. · 1995-01-01 → 1999-01-01

199620012006201120162021
1995-01-012023-12-04

Bars run only between published effective and cancellation dates. Current filings show their effective date only — no end is assumed and no continuous coverage is inferred. Current history: 3uet-3z4i; legacy rows from 6sqe-dvqs (frozen 2026-05-14) are kept only when not already in the current file.

  • UNITED FINANCIAL CASUALTY COMPANY

    Effective
    2021-06-30
    Cancelled
    2023-12-04
    Method
    Cancelled
    Policy
    CA04032090
    Dataset
    6sqe-dvqs

  • NATIONAL CONTINENTAL INS. CO

    Effective
    2021-06-30
    Cancelled
    2021-06-30
    Method
    Replaced
    Policy
    CA03831018
    Dataset
    6sqe-dvqs

  • TRUMBULL INSURANCE COMPANY

    Effective
    2018-06-01
    Cancelled
    2021-06-01
    Method
    Cancelled
    Policy
    08 UEA AZ6412
    Dataset
    6sqe-dvqs

  • THE CHARTER OAK FIRE INSURANCE CO.

    Effective
    2012-02-01
    Cancelled
    2014-06-28
    Method
    Cancelled
    Policy
    DTA0-810-3B134895-COF-12
    Dataset
    6sqe-dvqs

  • LIBERTY INSURANCE CORPORATION

    Effective
    2010-02-01
    Cancelled
    2012-03-10
    Method
    Cancelled
    Policy
    AS7-Z11-259694-03
    Dataset
    6sqe-dvqs

  • LIBERTY INSURANCE CORPORATION

    Effective
    2008-01-30
    Cancelled
    2010-02-01
    Method
    Replaced
    Policy
    AS7-111-259694-03
    Dataset
    6sqe-dvqs

  • LIBERTY INSURANCE CORPORATION

    Effective
    2008-01-30
    Cancelled
    2008-05-31
    Method
    Cancelled
    Policy
    AS7-111-258694-03
    Dataset
    6sqe-dvqs

  • HANOVER INSURANCE CO.

    Effective
    1999-01-01
    Cancelled
    2008-05-14
    Method
    Cancelled
    Policy
    AMN3502700
    Dataset
    6sqe-dvqs

  • HANOVER INSURANCE CO.

    Effective
    1999-01-01
    Cancelled
    2008-01-30
    Method
    Replaced
    Policy
    AMN3502700
    Dataset
    6sqe-dvqs

  • LIBERTY INSURANCE CORPORATION

    Effective
    2008-01-30
    Cancelled
    2008-01-30
    Method
    Replaced
    Policy
    AS7-111-259694-03
    Dataset
    6sqe-dvqs

  • LIBERTY INSURANCE CORPORATION

    Effective
    2008-01-30
    Cancelled
    2008-01-30
    Method
    Replaced
    Policy
    AS7-111-258694-03
    Dataset
    6sqe-dvqs

  • HANOVER INSURANCE CO.

    Effective
    1995-01-01
    Cancelled
    1999-01-01
    Method
    Replaced
    Policy
    AMN 350 27 00
    Dataset
    6sqe-dvqs
06

Federal activity

  1. 2025-06-17Census

    Latest MCS-150 filing

  2. 2023-12-046sqe-dvqs

    Prior policy ended (cancelled) — UNITED FINANCIAL CASUALTY COMPANY

  3. 2021-06-306sqe-dvqs

    Prior policy ended (replaced) — NATIONAL CONTINENTAL INS. CO

  4. 2021-06-016sqe-dvqs

    Prior policy ended (cancelled) — TRUMBULL INSURANCE COMPANY

  5. 2014-06-286sqe-dvqs

    Prior policy ended (cancelled) — THE CHARTER OAK FIRE INSURANCE CO.

  6. 2012-03-106sqe-dvqs

    Prior policy ended (cancelled) — LIBERTY INSURANCE CORPORATION

  7. 2010-02-016sqe-dvqs

    Prior policy ended (replaced) — LIBERTY INSURANCE CORPORATION

  8. 2008-05-316sqe-dvqs

    Prior policy ended (cancelled) — LIBERTY INSURANCE CORPORATION

  9. 2008-05-146sqe-dvqs

    Prior policy ended (cancelled) — HANOVER INSURANCE CO.

  10. 2008-01-306sqe-dvqs

    Prior policy ended (replaced) — HANOVER INSURANCE CO.

  11. 2008-01-306sqe-dvqs

    Prior policy ended (replaced) — LIBERTY INSURANCE CORPORATION

  12. 2008-01-306sqe-dvqs

    Prior policy ended (replaced) — LIBERTY INSURANCE CORPORATION

  13. 1999-01-016sqe-dvqs

    Prior policy ended (replaced) — HANOVER INSURANCE CO.

  14. 1987-10-15Census

    Official safety rating: S

  15. 1987-06-22Census

    Compliance review recorded (S)

  16. 1974-06-01Census

    Added to FMCSA registration

Built only from dates in the sources above. Authority changes use FMCSA's own change date (yu5v-wbh6).

Changes observed by VAX monitoring

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