Background
Rebecca Bybee traveled to West Des Moines for her daughter’s softball tournament at Holiday Park in July 2020. While walking on a concrete sidewalk and looking for the playing field, she stepped into an adjacent concrete drainage culvert that she mistook for a fork in the path. The culvert had an approximately fourteen-inch drop, no contrasting color, guardrail, or warning sign. Bybee broke her ankle and underwent surgery.
Bybee sued the city for negligence and premises liability, alleging unsafe maintenance of the complex. Her expert opined that the culvert created a foreseeable hazard and that relevant engineering and safety principles called for designing out, guarding against, or warning of the danger. The district court granted the city summary judgment under Iowa’s statutory state-of-the-art immunity provisions, finding that the city had complied with applicable standards when it constructed the sidewalk improvements.
The Court’s Holding
The Iowa Court of Appeals reversed and remanded for trial. Assuming without deciding that the city initially established a basis to invoke the state-of-the-art defense, the court held that Bybee’s expert evidence created genuine disputes of material fact over the engineering and safety standards applicable to the sidewalk and adjoining drainage culvert, and over whether the city complied with them.
The court rejected the district court’s conclusion that Bybee needed evidence of a violation of a mandatory construction law. Nonmandatory guidelines and general engineering and safety principles may be relevant to the state-of-the-art inquiry. Conflicting expert opinions—including whether the culvert was conspicuous to pedestrians and whether the city should have separated, protected, or warned against the drop—were for a jury to weigh. The court also rejected the city’s alternative due-care-immunity argument because the record lacked sufficient detail showing compliance with the ordinance’s required sidewalk specifications or permitting process.
Key Takeaways
- Municipal state-of-the-art immunity does not require a plaintiff to identify a violation of a mandatory code or regulation.
- Nonmandatory design guidance and general safety principles can create a fact issue about applicable standards and compliance.
- Courts cannot resolve competing expert evidence about a pedestrian hazard on summary judgment when a reasonable jury could credit the plaintiff’s evidence.
Why It Matters
The decision reinforces that Iowa municipal immunity is an affirmative defense with proof burdens on the municipality. Compliance with ADA requirements for a sidewalk, standing alone, did not resolve whether adjacent drainage features were safely designed.
For public-property injury cases, the opinion highlights the importance of evaluating the full site condition—not simply the technical compliance of the walking surface—and preserves the jury’s role where expert evidence conflicts.