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US Route 12
Fatal crashes 2015–2024 43Deaths 47Counties 10Latest data year 2024
FARS data are based on police crash reports and other sources; the drunk-driving measure is based on the highest BAC of any driver in the crash. Latest data year: 2024. The route is the trafficway recorded for each crash (FARS TWAY_ID); the same route number in another state has its own page.
Between 2015 and 2024, FARS records 43 fatal crashes on US Route 12 in Montana, with 47 deaths.
That is 2.3% of the 1,864 fatal crashes in Montana over the same years. The ten-year crash count fell 28% from 60 in 2005–2014 to 43 in 2015–2024.
The crashes were concentrated in Lewis and Clark County (14), Broadwater County (7) and Missoula County (5) and 7 other counties.
25.6% of the crashes had a driver reported as drinking (Montana: 43.9%) and 32.6% had a speeding-related driver (35.8%); pedestrians were 8.5% and motorcyclists 14.9% of those killed.
Fatal crashes per year
Route identification in FARS is consistent from 2000; earlier years are not shown. Shaded band: the ten-year window used for the shares below.
Compared with all fatal crashes in Montana
| Measure | US Route 12 | Montana |
|---|---|---|
| Fatal crashes, 2015–2024 | 43 | 1,864 |
| Deaths, 2015–2024 | 47 | 2,046 |
| Deaths per fatal crash | 1.1 | 1.1 |
| Share of state fatal crashes | 2.3% | 100% |
| Change vs previous ten years | -28% | -8% |
Factor shares
Counties along the route
| # | County | Fatal crashes on US-12 | Share of route | County total, all roads |
|---|---|---|---|---|
| 1 | Lewis and Clark County | 14 | 33% | 73 |
| 2 | Broadwater County | 7 | 16% | 17 |
| 3 | Missoula County | 5 | 12% | 147 |
| 4 | Musselshell County | 5 | 12% | 15 |
| 5 | Powell County | 4 | 9% | 28 |
| 6 | Golden Valley County | 2 | 5% | 5 |
| 7 | Meagher County | 2 | 5% | 8 |
| 8 | Rosebud County | 2 | 5% | 43 |
| 9 | Custer County | 1 | 2% | 13 |
| 10 | Wheatland County | 1 | 2% | 3 |
Hour of day
Share of fatal crashes on US Route 12 beginning in each hour, 2015–2024; tick marks the Montana share for all roads.
Where along the route
| Mile marker range | Fatal crashes | Share |
|---|---|---|
| Mile 55–60 | 4 | 9% |
| Mile 5–10 | 3 | 7% |
| Mile 45–50 | 3 | 7% |
| Mile 15–20 | 2 | 5% |
| Mile 25–30 | 2 | 5% |
| Mile 50–55 | 2 | 5% |
Five-mile bins by FARS milepoint, the six with the most fatal crashes; 72.1% of crashes on the route have a milepoint. Milepoints are as recorded by the state and can restart at county or district lines.
Other routes in Montana
- Interstate 90 193
- US Route 93 116
- US Route 2 103
- US Route 87 64
- Interstate 15 61
- US Route 212 55
- State Route 200 45
- US Route 89 35
- Interstate 94 31
- US Route 191 24
- State Route MT 23
All routes and counties in Montana
Questions and answers
How many fatal crashes have there been on US Route 12 in Montana?
43 fatal crashes with 47 deaths over 2015–2024, per NHTSA's FARS. The route is the trafficway recorded for the crash; the same numbered route in another state has its own page.
Which counties along US Route 12 had the most fatal crashes?
Lewis and Clark County (14), Broadwater County (7), Missoula County (5), Musselshell County (5) and Powell County (4).
What share of crashes on US Route 12 involved alcohol or speeding?
25.6% had a driver reported as drinking and 32.6% a speeding-related driver, against 43.9% and 35.8% for all fatal crashes in Montana.
When do fatal crashes happen on US Route 12?
46.5% of the crashes were between 6pm and 6am. The hour chart on this page shows the full distribution.
Provenance
Source: NHTSA Fatality Analysis Reporting System, annual national CSV files 2000–2024 (accident, vehicle and person tables), public domain. Route pages are built for signed Interstate, US and state routes with at least 20 fatal crashes in 2015–2024. Data through 31 Dec 2024; generated 30 Sep 2026. See methodology and corrections.