Henniker, NH truck route planning & crash data
Plan safer truck routes in Henniker: commercial truck and garbage truck crashes in Henniker and Merrimack County, dangerous roads, seasonality and route safety data for fleets. Patterns use Merrimack County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
0.0 deaths per 100 garbage-truck crashes vs 3.0 for all trucks.
Deadliest roads
How Merrimack County compares with New Hampshire
Merrimack County against New Hampshire and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Merrimack County stands out
Full comparison
| Measure (2015–2025) | Merrimack County | New Hampshire | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 42.2 | 30.4 | 49.7 | 1.4× the state |
| Deaths per 100 crashes | 3.0 | 2.6 | 3.4 | 1.2× the state |
| Injuries per crash | 0.37 | 0.39 | 0.49 | same |
| Garbage-truck share | 2.9% | 4.2% | 2.3% | 31% below the state |
| On snow, slush or ice | 23.5% | 20.2% | 6.2% | 1.2× the state |
| Morning rush (6–10 am) | 29.8% | 29.3% | 23.7% | same |
| In rain, sleet or snow | 24.6% | 22.8% | 13.8% | 1.1× the state |
| Winter months (Nov–Mar) | 47.4% | 47.6% | 41.9% | same |
| After dark | 17.1% | 16.3% | 24.8% | same |
Merrimack County sits below New Hampshire on garbage-truck share. It stands out for higher crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
Merrimack County at a glance: February the month with the most truck crashes: 12.5% of the year's total.
Overview
Merrimack County has recorded 761 truck crashes since 2015, with 277 people injured and 22 killed.
That averages about one truck crash every 5 days in fully reported years.
Henniker had 18 reported truck crashes since 2015, too few for reliable patterns, so the charts and findings on this page use Merrimack County numbers.
When crashes happen
Truck crashes peak in February (12.5% of the year) and are lowest in May (6.6%).
November through March accounts for 47.4% of truck crashes here, compared with 47.6% in New Hampshire.
The busiest hour is 10–11 am, with 8.5% of truck crashes.
Road surface: 23.5% of truck crashes were on snow, slush or ice (New Hampshire: 20.2%).
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of Henniker happened on I-89 (2), SR-9 (2), US-202 (2), Bridge Street (1) and SR-202 (1); no road leads clearly.
Garbage & waste trucks
21 crashes involved a garbage or refuse truck, a 2.8% share (New Hampshire: 4.2%).
The most garbage-truck crashes happen in July (24%).
Deaths per 100 garbage-truck crashes: 0.0, vs 3.0 for all truck crashes.
Route planning tips for Henniker fleets
- Build extra time into February routes: it has the most truck crashes here.
- For residential and commercial waste routes, look again at July schedules: garbage-truck crashes peak then.
- 23.5% of truck crashes were on snow, slush or ice, above New Hampshire; plan winter equipment checks before the season.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
About the data
Sources: the FMCSA crash file for all reported truck crashes and NHTSA FARS for fatal crashes with a large truck. Every statement here comes straight from those numbers.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Merrimack County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| I-89 | 2 |
| SR-9 | 2 |
| US-202 | 2 |
| Bridge Street | 1 |
| SR-202 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Merrimack County) |
|---|---|
| SR-3A | 9 |
| Dover Rd | 9 |
| N/Everett Tpk | 5 |
| Manchester St | 4 |
| N & Exit 3 | 4 |
| Hooksett Rd | 3 |
| I 89 N Mm 28.6 | 3 |
| I 89 S Mm 21.8 2 Miles N Of Exit 9 | 3 |
Henniker at a glance
| Population | 6,267 |
| Land area | 1.4 sq mi |
| Density | 4,426 per sq mi |
| Median household income (ZIP 03242) | $95,206 |
| Median home value (ZIP 03242) | $355,646 |
Waste facilities and haulers nearby
Historical data: truck crashes in Merrimack 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 | 33 | — | 0.8 |
| 2000s | 49 | +46% | 1.8 |
| 2010s | 58 | +20% | 1.0 |
| 2020s | 64 | +9% | 1.6 |
In the 1990s about 33 truck crashes a year were reported; in the 2020s, about 64. Reporting coverage also changed between these periods. NHTSA counts 1.8 fatal large-truck crashes a year in 2016–19 and 1.6 a year in 2020–24.
Nearby places
Questions fleets ask about Henniker
How common are truck crashes in Henniker?
Since 2015, 761 crashes involving commercial trucks were reported in Merrimack County (277 injured, 22 killed).
What is the worst month for truck crashes in Henniker?
The worst month is February: 12.5% of truck crashes in Merrimack County happen then.
How many garbage truck crashes are there in Henniker?
Garbage trucks were involved in 21 reported crashes in Merrimack County since 2015 (2.8% of truck crashes).
How does Henniker compare with New Hampshire for truck crashes?
Merrimack County records 42.2 truck crashes per 100,000 residents a year, against 30.4 across New Hampshire.
How can I plan a safer truck route in Henniker?
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.