Sioux Falls, SD Sign Regulations: Freeway-Facing Signs (2026)
Key Facts
- Overlay district
- I-29, I-90, I-229 corridors
- Max sign size
- 288 sq ft (672 with CUP)
- Max height
- 40 feet
- Interstate spacing
- 600 feet minimum
- I-229 corridor cap
- 21 structures total
Summary
Off-premises signs aimed at I-29, I-90, or I-229 traffic are confined to a designated Interstate Opportunity Overlay District, capped at 288 square feet, and must sit at least 600 feet from the next freeway-facing billboard.
Interstate Opportunity Overlay District: Interstate 29 (I-29) bound by Interstate 90 (I-90) and Interstate 229 (I-229); Interstate 90 (I-90) bound by Marion Road and Interstate 229 (I-229); Interstate 229 (I-229) bound by Interstate 90 (I-90) and Interstate 29 (I-29). ... the sign shall be no closer than 600 feet from any existing off-premises sign on an interstate highway.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-135: Current through local ordinance 54-26, passed 7-14-2026).
Full Breakdown
Sioux Falls zoning creates an Interstate Opportunity Overlay District covering I-29, I-90, and I-229 where off-premises (billboard) signs are permitted. Standard signs in the district max out at 288 square feet and 40 feet tall, with a 600-foot minimum spacing from any other off-premises sign on an interstate highway. The I-229 corridor gets an extra cap: no more than 21 off-premises sign structures total, to protect the greenway and rolling-topography views. Bigger boards up to 672 square feet need a conditional use permit.
Violations & Fines
General Code penalty: fine up to $500, up to 30 days in county jail, or both; each day a violation continues is a separate offense.
Frequently Asked Questions
Can I put a billboard facing I-29 anywhere in Sioux Falls?
Is there a cap on freeway billboards along I-229?
Sources & Official References
Other rules in Sioux Falls
Compare Sioux Falls to another location·View the South Dakota sign regulations overview
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