Thornton, NH truck route planning & crash data
Plan safer truck routes in Thornton: commercial truck and garbage truck crashes in Thornton and Grafton County, dangerous roads, seasonality and route safety data for fleets. Patterns use Grafton County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
14 of 297 truck crashes since 2015.
Deadliest roads
How Grafton County compares with New Hampshire
Grafton County against New Hampshire and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Grafton County stands out
Full comparison
| Measure (2015–2025) | Grafton County | New Hampshire | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 28.1 | 30.4 | 49.7 | 8% below the state |
| Deaths per 100 crashes | 2.8 | 2.6 | 3.4 | 1.1× the state |
| Injuries per crash | 0.47 | 0.39 | 0.49 | 1.2× the state |
| Garbage-truck share | 4.9% | 4.2% | 2.3% | 1.2× the state |
| On snow, slush or ice | 31.9% | 20.2% | 6.2% | 1.6× the state |
| Morning rush (6–10 am) | 27.8% | 29.3% | 23.7% | same |
| In rain, sleet or snow | 31.2% | 22.8% | 13.8% | 1.4× the state |
| Winter months (Nov–Mar) | 51.7% | 47.6% | 41.9% | 1.1× the state |
| After dark | 18.4% | 16.3% | 24.8% | 1.1× the state |
Grafton County has lower values than New Hampshire for crashes per 100k residents / yr. It runs above New Hampshire on deaths per 100 crashes, injuries per crash and garbage-truck share.
What stands out in Grafton County: 31.9% share of truck crashes on snow, slush or ice (New Hampshire: 20.2%).
Overview
Grafton County has recorded 297 truck crashes since 2015, with 138 people injured and 8 killed.
In complete reporting years that works out to about one truck crash every 14 days.
Thornton had 8 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Grafton County numbers.
When crashes happen
December has the most truck crashes, 13.1% of the yearly total, while March has the fewest (4.7%).
The five winter months (November to March) hold 51.7% of truck crashes, against 47.6% across New Hampshire.
By time of day, 1–2 pm stands out with 9.8% of truck crashes.
Snow, slush or ice was on the road in 31.9% of truck crashes, compared with 20.2% in New Hampshire.
Where crashes happen
Roads with fatal crashes involving a large truck within 10 miles of Thornton since 2015: I-93 (1). No single road stands out.
Garbage & waste trucks
Garbage trucks account for 14 of the truck crashes here, or 4.7%, compared with 4.2% in New Hampshire.
Route planning tips for Thornton fleets
- Review driver schedules for December, the month with the most truck crashes.
- Icy and snowy roads show up in 31.9% of truck crashes here, more than New Hampshire; schedule winter checks early.
- Check your own stops for crash hotspots and low bridges with the free Route Planner.
About the data
This report uses the FMCSA crash file (reported crashes of trucks over 10,000 lb) and NHTSA FARS (fatal crashes). It reports the numbers without guessing at reasons.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Grafton County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-93 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Grafton County) |
|---|---|
| Main St | 7 |
| I-93 | 6 |
| SR-3 | 4 |
| SR-302 | 3 |
| Dartmouth College Hwy | 2 |
| I 93 80 Ft N Of Mm 80.8 | 2 |
| I 93 Mm 106.4 | 2 |
| I-89 | 2 |
Thornton at a glance
| Population | 2,863 |
| Land area | 50.1 sq mi |
| Density | 57 per sq mi |
| Median household income (ZIP 03285) | $90,022 |
| Median home value (ZIP 03285) | $355,152 |
Waste facilities and haulers nearby
Historical data: truck crashes in Grafton 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 | 20 | — | 1.1 |
| 2000s | 24 | +23% | 0.6 |
| 2010s | 28 | +16% | 0.8 |
| 2020s | 22 | -23% | 0.6 |
From the 1990s to the 2020s, yearly reported truck crashes went from 20 to 22. Some of the change may reflect how crashes were reported. Fatal crashes involving a large truck averaged 1.2 a year in 2016–19 and 0.6 a year in 2020–24.
Nearby places
Questions fleets ask about Thornton
How many truck crashes happen in Thornton?
Since 2015, 297 crashes involving commercial trucks were reported in Grafton County (138 injured, 8 killed).
When do most truck crashes happen in Thornton?
Truck crashes in Grafton County peak in December, with 13.1% of the year's crashes.
Are garbage truck crashes common in Thornton?
14 crashes involving garbage or refuse trucks have been reported in Grafton County since 2015, 4.7% of all truck crashes.
How do truck crashes in Thornton compare with New Hampshire?
Per 100,000 residents, Grafton County has 28.1 truck crashes a year; New Hampshire has 30.4.
What is the best way to plan truck routes in Thornton?
Paste your stops into the free CurbWaste Route Planner: it scores your route against fatal-crash locations, suggests safer alternatives and flags low bridges.
2026 is a partial year. Updated October 2026.