Northern Ins. Co. of NY v. Chatham County
The Court ruled that a county that doesn't count as an "arm of the state" under the Eleventh Amendment cannot use sovereign immunity to dodge an admiralty lawsuit over a malfunctioning drawbridge that damaged a boat.
The decision confirms that counties and similar local governments generally can be sued for damages they cause, even when performing government functions like operating a public bridge over navigable water.
How it got here: A federal trial court granted the county summary judgment on immunity grounds; the Eleventh Circuit affirmed; the insurer asked the Supreme Court to review.
The Case in Depth
What happened
An insurance company paid out a claim after a Georgia county's drawbridge malfunctioned, dropping part of the bridge onto an insured boat and causing over $130,000 in damage. The insurer then sued the county to recover what it had paid, filing the case as an admiralty lawsuit in federal court because the incident involved a navigable waterway.
The question before the Court
When a county isn't protected by the Eleventh Amendment, can it still claim sovereign immunity to avoid being sued in an admiralty case?
Why it matters
Insurance companies, boat owners, and others harmed by county or municipal negligence involving bridges, docks, or waterways can now be confident that counties can't invoke a special immunity to escape liability just because a court case happens to be filed in admiralty rather than ordinary civil court.
What changes now
The case is reversed, meaning the county's immunity defense fails and the insurer's admiralty lawsuit against the county can proceed on the merits in the lower courts. This is a final merits ruling on the immunity question, not a temporary order, and it will guide how other counties and municipalities are treated in future admiralty suits arising from their operation of public infrastructure on navigable waters.
How the Court got there
The legal reasoning, step by step
- The Court explained that sovereign immunity comes from the states' own pre-constitutional sovereignty, not from the Eleventh Amendment itself, so only states and true "arms of the state" can claim it — not ordinary local governments.
- Applying that principle, the Court noted its long line of cases refusing to extend sovereign immunity to counties, even when a county exercises a slice of state power like running a public bridge.
- The Court rejected the county's argument that a separate, broader "residual immunity" existed outside the Eleventh Amendment framework, finding that the phrase the county relied on referred only to states' general retained sovereignty, not a distinct legal shield for counties.
- Because the county had already conceded it wasn't an arm of the state, and the Court had granted review on that same premise, the Court treated that point as settled and moved to whether admiralty law changes the analysis.
- The Court found that its precedent in Workman v. New York City already applied ordinary sovereign-immunity rules to admiralty suits against cities, and distinguished Ex parte New York because that case involved a defendant the courts couldn't reach jurisdictionally at all, unlike the county here.
- Concluding that admiralty law provided no special immunity for counties, the Court held the county could be sued like any other local government that isn't an arm of the state.
Doctrinal impact
Cases affected by this decision
Reaffirms Workman v. New York City (179 U. S. 552)
The Court relied on this case to hold that ordinary immunity rules for cities also apply to admiralty suits.
Distinguishes Ex parte New York (256 U. S. 490)
The Court said this case didn't apply because it involved a defendant courts couldn't reach at all, unlike the county here.