---
type: "Bill"
title: "Generally revise county speed limits"
description: "Generally revise county speed limits"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "SB 428"
citation: "Montana SB 428 (2025)"
classification: ["bill"]
subjects: ["Local Government", "Motor Vehicles", "Traffic Regulations"]
status: "enacted"
primary_sponsors: ["Willis Curdy"]
version_count: 25
action_count: 37
vote_count: 6
first_action: "2024-09-04T18:33:40+00:00"
last_action: "2025-05-08T21:27:10+00:00"
source: "openstates"
source_identifier: "ocd-bill/b6ecce22-678c-4be4-8249-30050139e4eb"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC0135?open_tab=sum"
source_hash: "f49b3bd2ed326768898565bc977b3529102d9aba8cb2ca07ca12ced78a9a2048"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mt"]
---

# Montana SB 428 (2025) — Generally revise county speed limits

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **LC0135.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284927)
2. **SB0428_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=286397)
3. **SB0428_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287864)
4. **SB0428_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293518)
5. **SB0428_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293694)
6. **SB0428_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300639)
7. **SB0428_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309235)
8. **SB0428_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309239)
9. **SB0428_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=286396)
10. **SB0428_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309243)
11. **SB0428_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321902)
12. **SB0428_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321903)
13. **SB0428_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321904)
14. **SB0428_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324767)
15. **SB0428_X(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325614)
16. **SB0428_X(15).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327251)
17. **SB0428_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309244)
18. **SB0428_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309394)
19. **SB0428_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309395)
20. **SB0428_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309545)
21. **SB0428_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309546)
22. **SB0428_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310976)
23. **SB0428_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316913)
24. **SB0428_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320488)
25. **SB0428_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309240)

## Votes

- be_concurred_in — **14–0** (pass) · lower
- Do Concur — **72–27** (pass) · lower
- Do Concur — **78–22** (pass) · lower
- Do Pass — **32–18** (pass) · upper
- do_pass — **8–3** (pass) · upper
- Do Pass — **31–18** (pass) · upper

## Sponsors

- Willis Curdy — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2024-09-04T18:33:40+00:00** (LC) Drafter Assigned
- **2024-10-17T17:26:00+00:00** (LC) Draft On Hold
- **2025-02-15T22:00:20+00:00** (LC) Draft Taken Off Hold
- **2025-02-15T22:10:01+00:00** (LC) Draft in Legal Review
- **2025-02-15T22:10:01+00:00** (LC) Draft Taken Off Hold
- **2025-02-16T16:45:49+00:00** (LC) Draft in Edit
- **2025-02-20T18:35:27+00:00** (LC) Draft in Input/Proofing
- **2025-02-20T19:47:40+00:00** (LC) Draft in Assembly
- **2025-02-20T22:58:52+00:00** (LC) Draft Ready for Delivery
- **2025-02-24T15:12:41+00:00** (LC) Draft Delivered to Requester
- **2025-02-24T15:57:33+00:00** (S) Introduced
- **2025-02-24T20:16:12+00:00** (S) First Reading `reading-1`
- **2025-02-25T01:26:51+00:00** (S) Referred to Committee - (S) Local Government `referral-committee`
- **2025-02-26T16:38:40+00:00** (S) Hearing - (S) Local Government
- **2025-02-28T23:30:38+00:00** (S) Committee Executive Action--Bill Passed - (S) Local Government `committee-passage`
- **2025-03-01T18:27:00+00:00** (S) Committee Report--Bill Passed - (S) Local Government `committee-passage`
- **2025-03-06T20:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-03-06T21:47:00+00:00** (S) 2nd Reading Passed `reading-2, reading-2`
- **2025-03-07T00:30:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-03-07T01:51:00+00:00** (S) 3rd Reading Passed `passage, reading-3`
- **2025-03-07T16:18:28+00:00** (S) Transmitted to House
- **2025-03-17T15:21:09+00:00** (H) Referred to Committee - (H) Transportation `referral-committee`
- **2025-03-17T19:02:52+00:00** (H) Hearing - (H) Transportation
- **2025-03-17T19:15:00+00:00** (H) First Reading `reading-1`
- **2025-03-28T23:25:07+00:00** (H) Committee Executive Action--Bill Concurred - (H) Transportation
- **2025-03-29T15:44:00+00:00** (H) Committee Report--Bill Concurred - (H) Transportation
- **2025-04-10T14:30:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-10T17:29:00+00:00** (H) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-11T21:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-11T23:36:00+00:00** (H) 3rd Reading Concurred `passage, reading-3`
- **2025-04-11T23:36:42+00:00** (S) Sent to Enrolling
- **2025-04-13T06:17:18+00:00** (S) Returned from Enrolling
- **2025-04-21T22:00:17+00:00** (S) Signed by President `passage`
- **2025-04-25T20:40:10+00:00** (H) Signed by Speaker `passage`
- **2025-04-25T21:18:10+00:00** (S) Transmitted to Governor `executive-receipt`
- **2025-05-05T19:04:00+00:00** (S) Signed by Governor `executive-signature`
- **2025-05-08T21:27:10+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/b6ecce22-678c-4be4-8249-30050139e4eb`. Confidence: reported (aggregated from official Montana legislature records).