MI HB4589

Defines "governmental function" to include activities performed by sworn law enforcement officers on public or private property within their authority and directed by their public employer for public safety purposes.

Clarifies that governmental agencies' duty to maintain highways extends only to the improved portion designed for vehicular travel and does not include sidewalks, trailways, crosswalks, or other installations outside the improved portion.

Requires municipal corporations to maintain sidewalks adjacent to municipal, county, or state highways in reasonable repair, with no liability unless the municipality knew or should have known of the defect at least 30 days before the injury.

Establishes a presumption that municipal corporations have maintained sidewalks in reasonable repair, which can only be rebutted by evidence of a vertical discontinuity of 2 inches or more or other dangerous conditions specific to the sidewalk itself.

Makes the court responsible for determining whether the sidewalk maintenance presumption has been rebutted as a matter of law.