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Carrier profile · USDOT 48310 · MC-305410 · FMCSA data fetched 2026-10-12

POLZER BROS INC

9 power units4 driversInterstateDURAND, WI

Census status Active (A)MC-305410 · code A
Official links FMCSA SAFER
← Back to overviewAuthority & Insurance · USDOT 48310
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 2026-10-11 10:58 UTCFetched 2026-10-12 04:55 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 2026-10-11 10:58 UTCFetched 2026-10-12 04:55 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 2026-10-11 10:58 UTCFetched 2026-10-12 04:55 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 2026-10-11 10:58 UTCFetched 2026-10-12 04:55 UTC

Source: InsHist – legacy (6sqe-dvqs) · raw queryDataset updated 2026-10-11 14:33 UTCFetched 2026-10-12 04:55 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

EMPLOYERS MUTUAL CASUALTY CO. · 2018-03-28 → 2021-07-02

EMPLOYERS MUTUAL CASUALTY CO. · 2018-03-28 → 2021-06-01

EMPLOYERS MUTUAL CASUALTY CO. · 1996-07-01 → 2018-04-28

EMPLOYERS MUTUAL CASUALTY CO. · 1996-07-01 → 2018-03-28

EMPLOYERS MUTUAL CASUALTY CO. · 2008-07-01 → 2011-07-30

EMPLOYERS MUTUAL CASUALTY CO. · 1996-07-01 → 2008-07-16

EMPLOYERS MUTUAL CASUALTY CO. · 1996-07-01 → 2008-07-01

2002200720122017
1996-07-012021-07-02

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.

  • EMPLOYERS MUTUAL CASUALTY CO.

    Effective
    2018-03-28
    Cancelled
    2021-07-02
    Method
    Cancelled
    Policy
    1E31519
    Dataset
    6sqe-dvqs

  • EMPLOYERS MUTUAL CASUALTY CO.

    Effective
    2018-03-28
    Cancelled
    2021-06-01
    Method
    Replaced
    Policy
    1E31519
    Dataset
    6sqe-dvqs

  • EMPLOYERS MUTUAL CASUALTY CO.

    Effective
    1996-07-01
    Cancelled
    2018-04-28
    Method
    Cancelled
    Policy
    1E3 1519
    Dataset
    6sqe-dvqs

  • EMPLOYERS MUTUAL CASUALTY CO.

    Effective
    1996-07-01
    Cancelled
    2018-03-28
    Method
    Replaced
    Policy
    1E3 1519
    Dataset
    6sqe-dvqs

  • EMPLOYERS MUTUAL CASUALTY CO.

    Effective
    2008-07-01
    Cancelled
    2011-07-30
    Method
    Cancelled
    Policy
    1C3-15-19
    Dataset
    6sqe-dvqs

  • EMPLOYERS MUTUAL CASUALTY CO.

    Effective
    1996-07-01
    Cancelled
    2008-07-16
    Method
    Cancelled
    Policy
    1E31519
    Dataset
    6sqe-dvqs

  • EMPLOYERS MUTUAL CASUALTY CO.

    Effective
    1996-07-01
    Cancelled
    2008-07-01
    Method
    Replaced
    Policy
    1E31519
    Dataset
    6sqe-dvqs
06

Federal activity

  1. 2025-08-20Census

    Latest MCS-150 filing

  2. 2021-07-026sqe-dvqs

    Prior policy ended (cancelled) — EMPLOYERS MUTUAL CASUALTY CO.

  3. 2021-06-016sqe-dvqs

    Prior policy ended (replaced) — EMPLOYERS MUTUAL CASUALTY CO.

  4. 2018-04-286sqe-dvqs

    Prior policy ended (cancelled) — EMPLOYERS MUTUAL CASUALTY CO.

  5. 2018-03-286sqe-dvqs

    Prior policy ended (replaced) — EMPLOYERS MUTUAL CASUALTY CO.

  6. 2011-07-306sqe-dvqs

    Prior policy ended (cancelled) — EMPLOYERS MUTUAL CASUALTY CO.

  7. 2008-07-166sqe-dvqs

    Prior policy ended (cancelled) — EMPLOYERS MUTUAL CASUALTY CO.

  8. 2008-07-016sqe-dvqs

    Prior policy ended (replaced) — EMPLOYERS MUTUAL CASUALTY CO.

  9. 2002-09-05Census

    Official safety rating: S

  10. 2002-08-21Census

    Compliance review recorded (C)

  11. 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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