Navajo County, AZ truck route planning & crash data
Plan safer truck routes in Navajo County: commercial truck and garbage truck crashes, dangerous roads, seasonality and route safety data for fleets.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
4 of 971 truck crashes since 2015.
Deadliest roads
How Navajo County compares with Arizona
Navajo County against Arizona and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Navajo County stands out
Full comparison
| Measure (2015–2025) | Navajo County | Arizona | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 73.6 | 35.9 | 49.7 | 2.1× the state |
| Deaths per 100 crashes | 9.4 | 5.2 | 3.4 | 1.8× the state |
| Injuries per crash | 0.22 | 0.19 | 0.49 | 1.2× the state |
| Garbage-truck share | 0.4% | 1.6% | 2.3% | 71% below the state |
| On snow, slush or ice | 6.3% | 3.2% | 6.2% | 2.0× the state |
| Morning rush (6–10 am) | 16.1% | 22.6% | 23.7% | 29% below the state |
| In rain, sleet or snow | 5.1% | 5.3% | 13.8% | same |
| Winter months (Nov–Mar) | 40.6% | 42.1% | 41.9% | same |
| After dark | 41.3% | 30.0% | 24.8% | 1.4× the state |
Navajo County has lower values than Arizona for garbage-truck share and morning rush (6–10 am). Where it is higher: crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash.
What stands out in Navajo County: 2.3× yearly fatal truck crashes in Navajo County: 2.8 in 2016–19, 6.2 in 2020–24.
Overview
Since 2015, 971 crashes involving commercial trucks have been reported in Navajo County. They injured 248 people and killed 87.
Across the years with complete reporting, that is roughly one truck crash every 5 days.
When crashes happen
The worst month is July with 10.3% of truck crashes; the quietest is April at 6.6%.
The five winter months (November to March) hold 40.6% of truck crashes, against 42.1% across Arizona.
More truck crashes happen at 2–3 pm than at any other hour (6.1%).
Snow, slush or ice was on the road in 6.3% of truck crashes, compared with 3.2% in Arizona.
Where crashes happen
Within this area, I-40 had the most fatal crashes involving a large truck since 2015 (21). After it: SR-260 (6), SR-377 (5) and US-60 (5).
Garbage & waste trucks
Garbage trucks account for 4 of the truck crashes here, or 0.4%, compared with 1.6% in Arizona.
Route planning tips for Navajo County fleets
- Build extra time into July routes: it has the most truck crashes here.
- Look at alternatives to I-40 at busy times: it leads this area in fatal truck crashes.
- 6.3% of truck crashes were on snow, slush or ice, above Arizona; plan winter equipment checks before the season.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Navajo County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (in Navajo County) |
|---|---|
| I-40 | 21 |
| SR-260 | 6 |
| SR-377 | 5 |
| US-60 | 5 |
| US-160 | 4 |
| SR-277 | 2 |
| SR-77 | 2 |
| Bia 64 | 1 |
| SR-264 | 1 |
| SR-99 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Navajo County) |
|---|---|
| I-40 Noncard@M257 | 11 |
| I-40 Noncard@M284 | 10 |
| I-40 Noncard@M255 | 9 |
| I-40 Noncard@M271 | 8 |
| I-40 Noncard@M288 | 7 |
| I-40 Noncard@M258 | 6 |
| I-40 Noncard@M279 | 6 |
| I-40 Noncard@M282 | 6 |
Navajo County at a glance
| Population | 109,516 |
| Land area | 9,949.5 sq mi |
| Density | 11 per sq mi |
| Median household income (ZIP average) | $57,169 |
Waste facilities and haulers nearby
Historical data: truck crashes in Navajo County since the 1990s
Combines the FMCSA crash file (all reported truck crashes, real coverage from about 1990) with NHTSA FARS (fatal crashes involving a large truck, 1982–2024).
| Decade | Truck crashes / yr | Change | Fatal crashes / yr (FARS) |
|---|---|---|---|
| 1990s | 12 | — | 2.7 |
| 2000s | 42 | +265% | 3.5 |
| 2010s | 36 | -14% | 2.3 |
| 2020s | 88 | +143% | 6.2 |
In the 1990s about 12 truck crashes a year were reported; in the 2020s, about 88. Reporting coverage also changed between these periods. NHTSA counts 2.8 fatal large-truck crashes a year in 2016–19 and 6.2 a year in 2020–24.
Cities, towns & communities in Navajo County
ZIP codes in Navajo County
Nearby counties
Questions fleets ask about Navajo County
How many truck accidents are there in Navajo County?
Navajo County has had 971 reported truck crashes since 2015, injuring 248 people and killing 87.
Which road has the most fatal truck crashes in Navajo County?
NHTSA data shows I-40 with 21 fatal large-truck crashes in Navajo County since 2015, the highest of any road.
What is the worst month for truck crashes in Navajo County?
July has the most truck crashes in Navajo County, 10.3% of the yearly total.
How many garbage truck accidents happen in Navajo County?
Garbage trucks were involved in 4 reported crashes in Navajo County since 2015 (0.4% of truck crashes).
How does Navajo County compare with Arizona for truck crashes?
Per 100,000 residents, Navajo County has 73.6 truck crashes a year; Arizona has 35.9.
How do I plan a garbage truck route in Navajo County?
Use the free Route Planner: enter your stops to get a risk score, safer alternatives and the low bridges on your route.
2026 is a partial year. Updated October 2026.