SIOUX FALLS, S.D. – In a state well-known for its vast landscapes and welcoming communities, the progress in infrastructure not only stitches the towns together but also propels local economies. A significant development in South Dakota roads is the reopening of the southbound on- and off-ramps at Cliff Avenue (Exit 4) on Interstate 229 in Sioux Falls, scheduled for Friday, Dec. 5, 2025.
This milestone, part of a broader initiative aimed at improving the transportation network across South Dakota, is being overseen by T&R Contracting, Inc. from Sioux Falls, known for their commitment to enhancing South Dakota’s highways. With a contract value of $48 million, the extensive project embarks on a journey toward completion in June 2027.
Mike Schmidt, Project Engineer, encourages motorists to stay vigilant as they navigate the newly reconstructed ramps, reminding them to “use caution and reduce their speed while workers and equipment are present.” This focus on safety reflects the mission of the South Dakota Department of Transportation (SDDOT) to ensure a secure and efficient travel experience for all.
For residents and travelers in Sioux Falls, this development is a welcome change. The city, renowned for its blend of natural beauty and cultural vibrancy, relies heavily on its transportation efficiency. Cliff Avenue acts as a significant artery within Sioux Falls, and the improved ramps will undoubtedly enhance the flow of traffic, supporting both local commutes and tourism.
- The southbound on-ramp will only be accessible from southbound Cliff Avenue.
- Drivers using the southbound off-ramp can access both northbound and southbound Cliff Avenue.
As a part of its outreach, SDDOT offers a text notification service for real-time updates on construction progress and traffic changes. Subscribers can text “I229Exit4” to 605-566-4041 for free updates and can opt out at any time. More details about this project can be found on the SDDOT website.
Mike Schmidt
South Dakota’s development extends beyond construction, encompassing the rich tapestry of its communities and landscapes. Sioux Falls epitomizes this harmony with a robust economy and a friendly atmosphere, drawing both residents and visitors alike. The commitment by local entities like T&R Contracting, Inc. ensures that these infrastructure improvements align with the state’s growth and aspirations.
The South Dakota Department of Transportation continues its mission to provide a seamless travel experience across the state. For more updates on road and weather conditions, road closures, and commercial vehicle restrictions, SDDOT encourages residents to visit their website or dial 511.
South Dakota Department of Transportation
Such projects resonate with the state’s core values – fostering community, supporting economic opportunities, and ensuring a future-ready infrastructure. As South Dakota continues to modernize its transportation networks, projects like the Cliff Avenue ramps are pivotal milestones that edge its vision forward.
For inquiries, residents and stakeholders can contact Mike Schmidt, Project Engineer, at mike.schmidt@sodak.news. Keep an eye on the developments as South Dakota steers towards a seamless and interconnected future.