Are there or were ever restaurants bridging over the highway in Chicago?

Yes. There are or have been restaurants that bridge over the highway in Chicago. Here are two notable examples:

- The Signature Room at the 95th: Located in the John Hancock Center, this iconic restaurant offers stunning views of the city skyline and Lake Michigan. It features a unique design, with a portion of the dining room extending out over Michigan Avenue.

- Everest: Situated on the 40th floor of the One North Wacker Building, Everest is a fine-dining restaurant known for its exquisite cuisine and breathtaking views. A section of the restaurant extends over Wacker Drive, providing diners with a memorable experience.