Mountain City, TN truck route planning & crash data
Plan safer truck routes in Mountain City: commercial truck and garbage truck crashes in Mountain City and Johnson County, dangerous roads, seasonality and route safety data for fleets. Patterns use Johnson County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2 of 79 truck crashes since 2015.
Deadliest roads
How Johnson County compares with Tennessee
Johnson County against Tennessee and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Johnson County stands out
Full comparison
| Measure (2015–2025) | Johnson County | Tennessee | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 35.9 | 60.1 | 49.7 | 40% below the state |
| Deaths per 100 crashes | 6.8 | 3.9 | 3.4 | 1.7× the state |
| Injuries per crash | 0.58 | 0.48 | 0.49 | 1.2× the state |
| Garbage-truck share | 2.7% | 1.9% | 2.3% | 1.4× the state |
| On snow, slush or ice | 2.7% | 2.3% | 6.2% | 1.2× the state |
| Morning rush (6–10 am) | 26.0% | 21.8% | 23.7% | 1.2× the state |
| In rain, sleet or snow | 15.1% | 14.9% | 13.8% | same |
| Winter months (Nov–Mar) | 50.7% | 40.5% | 41.9% | 1.3× the state |
| After dark | 17.8% | 25.9% | 24.8% | 31% below the state |
Johnson County has lower values than Tennessee for crashes per 100k residents / yr and after dark. Where it is higher: deaths per 100 crashes, injuries per crash and garbage-truck share.
The headline for Johnson County: January 16.5% of truck crashes happen in January, more than any other month.
Overview
Police reported 79 crashes involving commercial trucks in Johnson County since 2015: 46 people were injured and 5 were killed.
Across the years with complete reporting, that is roughly one truck crash every 55 days.
Only 14 truck crashes were reported in Mountain City since 2015; patterns below come from Johnson County as a whole.
56% of truck crash reports in Johnson County since 2015 leave the city field blank; place counts include only reports that name the place.
When crashes happen
January has the most truck crashes, 16.5% of the yearly total, while May has the fewest (2.5%).
Winter months (Nov–Mar) carry 50.7% of truck crashes, vs 40.5% for Tennessee.
More truck crashes happen at 9–10 am than at any other hour (10.1%).
2.7% of truck crashes here happened on snow, slush or ice, against 2.3% across Tennessee.
Where crashes happen
Since 2015, fatal crashes with a large truck within 10 miles of Mountain City happened on CR-PLEASANT Valley Rd (1), SR-91 (1) and US-421 (1); no road leads clearly.
Garbage & waste trucks
2 crashes involved a garbage or refuse truck, a 2.5% share (Tennessee: 1.9%).
Route planning tips for Mountain City fleets
- Build extra time into January routes: it has the most truck crashes here.
- The morning rush (6–10 am) holds 26.0% of truck crashes here, more than Tennessee; adjust start times where you can.
- 2.7% of truck crashes were on snow, slush or ice, above Tennessee; 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 Johnson County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| CR-PLEASANT Valley Rd | 1 |
| SR-91 | 1 |
| US-421 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Johnson County) |
|---|---|
| SR-91N | 10 |
| SR-67W | 10 |
| SR-421S | 9 |
| US-421 | 8 |
| Roan Creek Rd | 5 |
| SR-421N | 5 |
| Tn-91 | 5 |
| Tn-67 | 4 |
Mountain City at a glance
| Population | 2,486 |
| Land area | 3.4 sq mi |
| Density | 738 per sq mi |
| Median household income (ZIP 37683) | $55,979 |
| Median home value (ZIP 37683) | $177,040 |
Waste facilities and haulers nearby
Historical data: truck crashes in Johnson 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 | 2 | — | 0.3 |
| 2000s | 5 | +112% | 0.5 |
| 2010s | 6 | +9% | 0.4 |
| 2020s | 6 | +6% | 0.2 |
In the 1990s about 2 truck crashes a year were reported; in the 2020s, about 6. Reporting coverage also changed between these periods. Fatal crashes involving a large truck averaged 0.8 a year in 2016–19 and 0.2 a year in 2020–24.
Nearby places
Questions fleets ask about Mountain City
How many truck accidents are there in Mountain City?
Since 2015, 79 crashes involving commercial trucks were reported in Johnson County (46 injured, 5 killed).
What is the worst month for truck crashes in Mountain City?
January has the most truck crashes in Johnson County, 16.5% of the yearly total.
How many garbage truck accidents happen in Mountain City?
Since 2015, Johnson County has reported 2 garbage-truck crashes, or 2.5% of its truck crashes.
How does Mountain City compare with Tennessee for truck crashes?
Johnson County records 35.9 truck crashes per 100,000 residents a year, against 60.1 across Tennessee.
What is the best way to plan truck routes in Mountain City?
The free Route Planner takes your stops and returns a route risk score, safer alternatives and low-bridge warnings.
2026 is a partial year. Updated October 2026.