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.
-
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
Download Fact Sheet
5,883
Bridges
16%
of Bridges are Deficient
89
High Hazard Dams
$6.4B
in Drinking Water Needs
118 Miles
of Levees
Protecting 41,900 people
13%
of Roads in poor or fair condition
$ 199.95
Motorist pays annually
due to insufficient infrastructure
2.2M
Passenger Trips on Public Transit
$6.8B
Wastewater needs
$22.8B
Total storm damage
(1980-2024)
IIJA Grants
IIJA Funding Announced
Number of IIJA Projects
Lewis & Clark Rural Water System: This $152 million award accelerated construction by a decade, enabling over 300 miles of pipeline to deliver reliable clean water from the Missouri River to more than 350,000 people in rural Iowa, Minnesota, and South Dakota who previously lacked access.
Sisseton Milbank Railroad Modernization Project: This $24.7 million award will replace 37 miles of track and rehabilitate a bridge on the Sisseton Milbank Railroad, improving safety by reducing derailment risk, increasing track speed, and enabling more efficient grain transportation and truck unloading operations.
Improving Mobility, Safety and Access to the Pine Ridge Reservation: This $16.7 million award will reconstruct 8.7 miles of South Dakota Highway 73 and add lighting along SD 248 in Kadoka, improving roadway safety with expanded shoulders, rumble strips, curve corrections, culverts, and lighting, while enhancing mobility and connectivity for the Pine Ridge Reservation.
Connect with Your Legislators
Let everyone know how important it is that we continue to invest in the future of America’s infrastructure.
Take Action Today