Figure 6.2 Roadway Miles + Usage
Figure 6.3 Highway System Composition
91%
9% Interstate
14% State Secondary
2% Urban
68%
2% Municipal
South Dakota Highway System Composition
32%
9%
Roadway Miles
Roadway Usage
36% Major Arterial
37% Minor Arterial
Local, Tribal, and Bureau of Indian Affairs Roads State Roads
Source: SDDOT Long Range Transportation Plan dot.sd.gov/media/documents/FinalSDLRTP.pdf
Prior to COVID, traffic crash fatalities and crash-related injuries were decreasing in South Dakota. Like many other states, crashes spiked in 2020, but it is too early to determine the near-term trend. While a small portion of all traffic-related fatalities, pedestrian fatalities appear to be increasing long-term, a trend shared with many states. The most recent data shows that while many safety performance measures are tracking to meet goals, total traffic fatalities and pedestrian fatalities are not. Most of the current transportation network has the capacity to meet future needs. However, specific locations, known as spot locations, near freight intermodal facilities, larger cities, and metropolitan areas will have needs. Spot locations are not part of a larger corridor nor are they part of a systemic approach, requiring less coordination and thought about indirect and cumulative effects. An example would be an isolated intersection that has poor geometry and a high rate of fatal and severe injury crashes. The causes are known, so the planning, design, and construction would address just the acute problems. Point out that while all road types in the transportation network currently meet or exceed the goal now and in the 2031 future projection for conditions, all are also expected to trend negatively during that time at current funding levels, which will have to be redirected to a positive trend at some point, and it takes several years for new funding to reverse that trend.
Infrastructure First Project
Roads | 67
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