All of the following are classes of inland marine risks EXCEPT?

The classification of inland marine risks encompasses various types of exposures primarily associated with the transportation of goods and property over land. Inland marine insurance provides coverage for property while it's in transit or while it is located at a specific area that is not fixed.

Common carrier cargo liability is designed to cover the liability of a transportation provider for loss or damage to goods they are transporting. This coverage is typically aligned with the operational risk of moving goods from one location to another, which is an intrinsic part of inland marine insurance.

The other classifications, including bridges, tunnels, and instrumentalities of transportation, commercial property floater risks, and domestic shipments and transportation risks, all fit within the broader scope of inland marine insurance as they pertain to property being transported or the risks associated with movable or mobile property.

Therefore, common carrier cargo liability is considered a distinct category of liability rather than a classification of inland marine risks, which is why it stands apart from the other options listed. The other situations refer to the characteristics of inland marine coverage while the common carrier liability centers around the transportation provider's responsibilities rather than an inherent risk of the property being transported.