Lake Sinai, SD truck route planning & crash data
Plan safer truck routes in Lake Sinai: commercial truck and garbage truck crashes in Lake Sinai and Brookings County, dangerous roads, seasonality and route safety data for fleets. Patterns use Brookings County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
2 of 157 truck crashes since 2015.
Deadliest roads
No fatal large-truck crashes with a road name recorded here since 2015.
How Brookings County compares with South Dakota
Brookings County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Brookings County stands out
Full comparison
| Measure (2015–2025) | Brookings County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 37.0 | 42.0 | 49.7 | 12% below the state |
| Deaths per 100 crashes | 2.7 | 5.2 | 3.4 | 48% below the state |
| Injuries per crash | 0.12 | 0.13 | 0.49 | 8% below the state |
| Garbage-truck share | 1.4% | 1.6% | 2.3% | 16% below the state |
| On snow, slush or ice | 28.4% | 28.6% | 6.2% | same |
| Morning rush (6–10 am) | 24.3% | 22.2% | 23.7% | 1.1× the state |
| In rain, sleet or snow | 15.5% | 17.5% | 13.8% | 11% below the state |
| Winter months (Nov–Mar) | 49.3% | 48.8% | 41.9% | same |
| After dark | 16.9% | 22.8% | 24.8% | 26% below the state |
Compared with South Dakota, Brookings County is lower on crashes per 100k residents / yr, deaths per 100 crashes and injuries per crash. It stands out for higher morning rush (6–10 am).
The headline for Brookings County: March worst month: 13.4% of truck crashes, vs 8.3% in an average month.
Overview
Since 2015, 157 crashes involving commercial trucks have been reported in Brookings County. They injured 19 people and killed 5.
In complete reporting years that works out to about one truck crash every 27 days.
With 0 truck crashes reported in Lake Sinai since 2015, this page uses Brookings County numbers for its patterns and comparisons.
When crashes happen
March has the most truck crashes, 13.4% of the yearly total, while April has the fewest (4.5%).
Winter months (Nov–Mar) carry 49.3% of truck crashes, vs 48.8% for South Dakota.
By time of day, 9–10 am stands out with 12.1% of truck crashes.
28.4% of truck crashes here happened on snow, slush or ice, against 28.6% across South Dakota.
Where crashes happen
NHTSA lists no located fatal large-truck crashes within 10 miles of Lake Sinai since 2015.
Garbage & waste trucks
Garbage trucks account for 2 of the truck crashes here, or 1.3%, compared with 1.6% in South Dakota.
Route planning tips for Lake Sinai fleets
- Review driver schedules for March, the month with the most truck crashes.
- The morning rush (6–10 am) holds 24.3% of truck crashes here, more than South Dakota; adjust start times where you can.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Brookings County
By hour of day
Most dangerous roads for trucks
No fatal crashes involving a large truck with a road name were recorded within 10 miles since 2015.
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Brookings County) |
|---|---|
| I-29 | 54 |
| US-14 | 32 |
| Ave | 27 |
| Sd Hwy 324 | 4 |
| Us Hwy 14 B | 4 |
| 22Nd Ave | 3 |
| Sd Hwy 30 | 3 |
| 8Th St | 2 |
Lake Sinai at a glance
| Population | 177 |
| Land area | 33.3 sq mi |
| Density | 5 per sq mi |
| Median household income (ZIP 57061) | $56,875 |
Waste facilities and haulers nearby
Historical data: truck crashes in Brookings 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 | 6 | — | 0.7 |
| 2000s | 7 | +29% | 0.4 |
| 2010s | 11 | +58% | 0.4 |
| 2020s | 16 | +43% | 0.2 |
From the 1990s to the 2020s, yearly reported truck crashes went from 6 to 16. Some of the change may reflect how crashes were reported. Fatal large-truck crashes: 0.5 a year in 2016–19, 0.2 a year in 2020–24.
Nearby places
Questions fleets ask about Lake Sinai
How many truck crashes happen in Lake Sinai?
Brookings County has had 157 reported truck crashes since 2015, injuring 19 people and killing 5.
Which month has the most truck crashes in Lake Sinai?
March has the most truck crashes in Brookings County, 13.4% of the yearly total.
How many garbage truck accidents happen in Lake Sinai?
Garbage trucks were involved in 2 reported crashes in Brookings County since 2015 (1.3% of truck crashes).
How does Lake Sinai compare with South Dakota for truck crashes?
Brookings County records 37.0 truck crashes per 100,000 residents a year, against 42.0 across South Dakota.
How can I plan a safer truck route in Lake Sinai?
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.