The deadline that costs people the most is usually 120 days if a government-owned tree or road is involved, even though Wisconsin's general injury lawsuit deadline is 3 years from the crash.

That push for a fast release is often about locking you in before the ownership and maintenance facts come out.

If the tree was near a boulevard, terrace, park, or other public right-of-way in Oshkosh, the claim may involve the City of Oshkosh, Winnebago County, or Wisconsin DOT if it happened on or near I-41, US 45, or a state-maintained road. Claims involving government entities in Wisconsin can trigger a 120-day notice requirement under Wis. Stat. § 893.80. Missing that can cost far more than arguing over fault later.

The insurer's angle is usually one of these:

• get you to accept a small payment before you miss more work or need more treatment
• get a recorded statement they can use to frame it as an "act of God" from fall winds or wildlife-season conditions
• get broad medical or property releases before anyone checks whether the tree was dead, previously reported, or improperly maintained

A fallen tree is not automatically unavoidable. If there were prior complaints, visible rot, trimming issues, or storm warnings that should have triggered road closure or cleanup, that matters. So does who owned the tree and who maintained the shoulder or right-of-way.

What helps most right away: the exact location, photos of the stump or trunk, nearby house numbers, dashcam footage, names of witnesses, and the report from Oshkosh Police Department or the responding agency. Also ask whether 911 logs, DPW/Forestry records, or prior service complaints exist for that spot.

Do not assume "release" means just car damage. Many releases waive injury claims, wage loss, and future treatment, which matters a lot if you're hourly and can't afford missed shifts.