Niwot, CO truck route planning & crash data
Plan safer truck routes in Niwot: commercial truck and garbage truck crashes in Niwot and Boulder County, dangerous roads, seasonality and route safety data for fleets. Patterns use Boulder County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
4.5 deaths per 100 garbage-truck crashes vs 4.5 for all trucks.
Deadliest roads
How Boulder County compares with Colorado
Boulder County against Colorado and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Boulder County stands out
Full comparison
| Measure (2015–2025) | Boulder County | Colorado | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 14.6 | 32.6 | 49.7 | 55% below the state |
| Deaths per 100 crashes | 4.5 | 5.1 | 3.4 | 12% below the state |
| Injuries per crash | 0.36 | 0.32 | 0.49 | 1.1× the state |
| Garbage-truck share | 4.1% | 2.8% | 2.3% | 1.5× the state |
| On snow, slush or ice | 10.2% | 14.8% | 6.2% | 31% below the state |
| Morning rush (6–10 am) | 29.0% | 25.7% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 10.0% | 13.2% | 13.8% | 24% below the state |
| Winter months (Nov–Mar) | 42.9% | 43.5% | 41.9% | same |
| After dark | 10.0% | 22.4% | 24.8% | 55% below the state |
Boulder County has lower values than Colorado for crashes per 100k residents / yr, deaths per 100 crashes and on snow, slush or ice. Where it is higher: injuries per crash, garbage-truck share and morning rush (6–10 am).
Niwot at a glance: SR-119 most fatal truck crashes within 10 miles of Niwot: 5 since 2015.
Overview
Boulder County has recorded 563 truck crashes since 2015, with 212 people injured and 24 killed.
Across the years with complete reporting, that is roughly one truck crash every 8 days.
Niwot had 1 reported truck crash since 2015, too few for reliable patterns, so the charts and findings on this page use Boulder County numbers.
36% of truck crash reports in Boulder County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
The worst month is June with 10.8% of truck crashes; the quietest is April at 5.9%.
November through March accounts for 42.9% of truck crashes here, compared with 43.5% in Colorado.
More truck crashes happen at 1–2 pm than at any other hour (11.0%).
Road surface: 10.2% of truck crashes were on snow, slush or ice (Colorado: 14.8%).
Where crashes happen
The deadliest road for trucks within 10 miles of Niwot is SR-119, with 5 fatal large-truck crashes since 2015. It is followed by US-287 (4), US-36 (3) and Hover St (2).
Garbage & waste trucks
Garbage and refuse trucks were involved in 24 crashes, 4.3% of the total, against 2.8% across Colorado.
Garbage-truck crashes peak in August (17% of them).
They recorded 4.5 deaths per 100 crashes, against 4.5 for all trucks.
Route planning tips for Niwot fleets
- Build extra time into June routes: it has the most truck crashes here.
- Where you can, review stops along SR-119; it has the most fatal large-truck crashes nearby.
- Garbage-truck crashes here peak in August; review collection routes for that month.
- The morning rush (6–10 am) holds 29.0% of truck crashes here, more than Colorado; adjust start times where you can.
- Use the free Route Planner to score your route and spot low bridges before drivers head out.
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 Boulder County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| SR-119 | 5 |
| US-287 | 4 |
| US-36 | 3 |
| Hover St | 2 |
| I-25 | 2 |
| SR-52 | 2 |
| SR-66 | 2 |
| Aggregate Blvd | 1 |
| Boston Ave | 1 |
| CR-NELSON Rd | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Boulder County) |
|---|---|
| Hwy 287 At Mp 306 | 4 |
| Hwy 66 At Mp 37 | 4 |
| Ken Pratt Blvd At Bowen St | 3 |
| Hwy 66 At Mp 38 | 3 |
| Hwy 52 At Mp 6 | 3 |
| Hwy 36 At Mp 44 | 3 |
| Hwy 36 At Mp 42 | 3 |
| Hwy 36 At Mp 40 | 3 |
Niwot at a glance
| Land area | 4.0 sq mi |
Waste facilities and haulers nearby
Historical data: truck crashes in Boulder 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 | 34 | — | 1.4 |
| 2000s | 46 | +36% | 1.9 |
| 2010s | 50 | +8% | 2.6 |
| 2020s | 44 | -13% | 1.4 |
Reported truck crashes averaged 34 a year in the 1990s and 44 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal crashes involving a large truck averaged 4.2 a year in 2016–19 and 1.4 a year in 2020–24.
Nearby places
Questions fleets ask about Niwot
How many truck crashes happen in Niwot?
Since 2015, 563 crashes involving commercial trucks were reported in Boulder County (212 injured, 24 killed).
Where do fatal truck crashes happen most in Niwot?
NHTSA data shows SR-119 with 5 fatal large-truck crashes within 10 miles of Niwot since 2015, the highest of any road.
What is the worst month for truck crashes in Niwot?
June has the most truck crashes in Boulder County, 10.8% of the yearly total.
Are garbage truck crashes common in Niwot?
Since 2015, Boulder County has reported 24 garbage-truck crashes, or 4.3% of its truck crashes.
How do truck crashes in Niwot compare with Colorado?
Per 100,000 residents, Boulder County has 14.6 truck crashes a year; Colorado has 32.6.
What is the best way to plan truck routes in Niwot?
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.