South Dakota Infrastructure Overview
While the nation’s infrastructure earned a C in the 2025 Infrastructure Report Card, South Dakota faces infrastructure challenges of its own. For example, driving on roads in need of repair in South Dakota costs each driver $562 per year, and 17% of bridges are rated structurally deficient. Drinking water needs in South Dakota are an estimated $730 million. 90 dams are considered to be high-hazard potential. The state’s schools have an estimated capital expenditure gap of $125 million. This deteriorating infrastructure impedes South Dakota’s ability to compete in an increasingly global marketplace. Success in a 21st-century economy requires serious, sustained leadership on infrastructure investment at all levels of government. Delaying these investments only escalates the cost and risks of an aging infrastructure system, an option that the country, South Dakota, and families can no longer afford.
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Explore South Dakota
- State Fact Sheet
- IIJA Grants
$1.1 billion is needed to maintain and improve South Dakota's drinking water infrastructure over the next 20 years.
State Fact Sheet
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Aviation
$34.5 million in 2024 airport improvement grants across 5 major airports
Drinking Water
$1.1 billion total drinking water need
Transit
2.1 million passenger trips across 21 systems in 2023
Bridges
5,887 bridges, 16.4% of which were structurally deficient in 2024
Hazardous Waste
4 Superfund sites
Wastewater
$503 million total wastewater need
Dams
89 high hazard dams
Levees
177 miles of levees protect 27,900 residents
Roads
34% of roads are in poor or fair condition
IIJA Grants
for broadband deployment within the Rosebud Sioux Tribe
to Rapid City Regional Airport
for design work at Allen Dam in Bennett County
to Lower Brule Day School for electric buses
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