I-90 truck accidents in South Dakota (2020-2024)

I-90 truck accident deaths in South Dakota by year

Annual truck accident deaths on I-90 in South Dakota fell from 4 in 2020 to 1 in 2021, then rose to 3 in 2022. They rose again to 8 in 2023 before falling to 6 in 2024. For deaths in large-truck crashes, 2023 was the highest year and 2021 the lowest. Neither extreme was tied.^{[1][2][3][4][5]}

All-route deaths followed a different sequence: 10 in 2020, 14 in 2021, 10 in 2022, 23 in 2023 and 14 in 2024. The highest all-route count was 23 in 2023; 2020 and 2022 tied for the lowest at 10. The all-route counts for 2021 and 2024 were equal at 14, while their truck accident death counts were 1 and 6, respectively.^{[1][2][3][4][5]}

Crashes are placed on the route by the trafficway identifier recorded for each fatal crash. 2024 is the Annual Report File.

Counties along I-90 in South Dakota

Truck accident deaths assigned to I-90 in South Dakota occurred in 10 counties. Among the listed rows, Minnehaha County had the highest death count, 6, and share, 27.3%. Lawrence County and Lyman County each recorded 3 deaths and 13.6%. Pennington County, Aurora County and Meade County each recorded 2 deaths and 9.1%.^{[1][2][3][4][5][6]}

Brule County, McCook County, Hanson County and Jackson County each recorded 1 death and 4.5%, tying for the lowest death count among the listed rows. Each percentage uses the segment's large-truck death total. These county figures locate the fatal truck accident crashes through recorded crash locations, rather than identifying where the people killed lived.^{[1][2][3][4][5][6]}

How the truck crashes on I-90 happened

For I-90 in South Dakota, rear-end truck accident crashes accounted for 7 deaths, or 31.8%; head-on crashes accounted for 6, or 27.3%. Sideswipe crashes recorded 1 death, or 4.5%, and angle (side impact) crashes recorded 0, or 0.0%. "Not a collision with another moving vehicle" recorded 8 deaths, or 36.4%. This row means no collision with a motor vehicle in transport, including events such as rollovers or impacts with parked vehicles. A vehicle stopped in traffic can be in transport. Manner of collision describes the first harmful event.^{[1][2][3][4][5][6]}

Daytime recorded 14 truck accident deaths, or 63.6%, and nighttime recorded 8, or 36.4%. Rural locations recorded 18 deaths, or 81.8%, compared with urban locations at 4, or 18.2%. Work-zone deaths numbered 4. These classifications count people killed in large-truck crashes, rather than trucks or fatal crashes.^{[1][2][3][4][5][6]}

I-90 in other states

Across I-90, the supplied route-wide count was 187 deaths in large-truck crashes during 2020 to 2024, with deaths recorded in 13 states. South Dakota's 22 deaths represented 11.8% of that route-wide total. The other-state table lists Montana at 41 deaths and New York at 30. Montana had the higher truck accident death count among those listed other-state rows; each listed count exceeded South Dakota's.^{[1][2][3][4][5][6]}

The listed other-state segments are a subset, and the route-wide total is supplied separately. These truck accident counts are not traffic-adjusted risk rankings. They provide no population or mileage rates and cannot establish relative risk per trip or mile for these state segments.^{[1][2][3][4][5][6]}

About these figures

The I-90 truck accident figures for South Dakota come from NHTSA's FARS, a census of fatal motor vehicle traffic crashes. Nonfatal crashes and injuries are excluded. Counts use crash locations, not the residences of people killed. A search for a truck accident lawyer does not change that location-based grouping.^[8][6][7]

For South Dakota's I-90 segment, crash-level route signing and trafficway identifiers assign crashes without establishing the highway's full geographic extent. Large-truck involvement does not establish fault. The 2020 to 2023 figures use FARS Final Files. The 2024 figures use the Annual Report File and can change when NHTSA replaces it with the Final File. That distinction applies to the annual truck accident counts presented here.^[8][6][7]

See also

• South Dakota truck accident statistics (2020-2024)
• I-90 truck accidents in Montana (2020-2024)
• I-90 truck accidents in New York (2020-2024)