ZIP 03242 (Henniker, NH) truck route planning & crash data
Plan safer truck routes around ZIP 03242: commercial truck and garbage truck crashes here and in Merrimack County, 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
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 has lower values than New Hampshire for garbage-truck share. Where it is higher: crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice.
The headline for Merrimack County: February worst month: 12.5% of truck crashes, vs 8.3% in an average month.
Overview
Since 2015, 761 crashes involving commercial trucks have been reported in Merrimack County. They injured 277 people and killed 22.
In complete reporting years that works out to about one truck crash every 5 days.
When crashes happen
February has the most truck crashes, 12.5% of the yearly total, while May has the fewest (6.6%).
November through March accounts for 47.4% of truck crashes here, compared with 47.6% in New Hampshire.
By time of day, 10–11 am stands out 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
Fatal large-truck crashes within 10 miles of ZIP 03242 since 2015 were spread across roads: I-89 (2), SR-9 (2), US-202 (2), Bridge Street (1) and SR-202 (1).
Garbage & waste trucks
Garbage trucks account for 21 of the truck crashes here, or 2.8%, compared with 4.2% in New Hampshire.
Their busiest month is July, with 24% of garbage-truck crashes.
They recorded 0.0 deaths per 100 crashes, against 3.0 for all trucks.
Route planning tips for ZIP 03242 fleets
- Review driver schedules for February, the month with the most truck crashes.
- 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.
- 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 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 |
ZIP 03242 at a glance
| Population | 6,197 |
| Density | 54 per sq mi |
| Median household income | $95,206 |
| Median home value | $355,646 |
| Home ownership | 64% |
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 ZIP codes
Questions fleets ask about ZIP 03242
How common are truck crashes in ZIP 03242?
761 truck crashes have been reported in Merrimack County since 2015, with 22 deaths and 277 injuries.
Which month has the most truck crashes in ZIP 03242?
Truck crashes in Merrimack County peak in February, with 12.5% of the year's crashes.
How many garbage truck crashes are there in ZIP 03242?
21 crashes involving garbage or refuse trucks have been reported in Merrimack County since 2015, 2.8% of all truck crashes.
What is the truck crash rate in ZIP 03242 compared with New Hampshire?
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 ZIP 03242?
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.