I had lunch at Rivers for the first time in 1997. I ordered the salmon. I sat by the window. Outside, the Chicago River did what the Chicago River does, which is to move slowly and smell like itself, and the lunch was good, and the bill was more than I expected for what I’d ordered, which is a thing I say about Rivers every single time and which never stopped me from going back. That’s what a good restaurant is. That’s what this city is losing on April 12, when Rivers closes its doors after thirty years of lunch at 30 S. Wacker.

People from other cities — and I say this with the particular patience of a man who has had to explain Chicago to people from other cities for six decades — don’t always understand what a Loop restaurant means. It’s not just a place to eat. It’s a place where the business of the city gets done, over tables that have seen contracts signed and deals blown and more than a few decisions made on the basis of what the third glass of wine told somebody. Rivers had that quality. It had a river view, which sounds obvious given the name, but which in the context of the Loop — where most of your dining options are either a counter with a sandwich or a room that was clearly designed for people who had already given up on having a nice time — was actually remarkable.

Back when the CME was doing its thing across the street and the floor traders were still floor traders, Rivers was where they went afterward. I interviewed a few of them over the years. They’d come in smelling like the trading floor — which is a specific smell, if you’ve ever been near it — and they’d order heavy and drink moderately and argue about positions and settlements in a way that sounded like another language but clearly meant something to them. The restaurant absorbed all of it. It didn’t care. It had seen worse.

The announcement, made by DineAmic Hospitality, cited what the company called “a strategic decision about the portfolio going forward.” I have been in this business long enough to know that “strategic decision about the portfolio” means something went wrong, though the something is often politely unspecified. The Fast Market — the quick-service concept in the same building — closes April 10. The full restaurant follows April 12. There is no announced successor. The CME Center, which has anchored the south bank of the river in that stretch of the Loop since the 1980s, will have one fewer reason for people to leave the building at noon.

I’m not going to pretend this is the worst thing that’s happened to Chicago. I’ve watched the city lose a lot more than a restaurant in thirty years. But there’s a category of closing that goes beyond the business itself — places that gave a neighborhood a kind of texture, a gathering point, something that meant you knew where to take a client or a source or a person you needed to have a real conversation with. Rivers was that kind of place. You could trust a restaurant that had been there that long. It had survived recessions and renovations and the complete transformation of the riverfront from industrial corridor to the thing it is now. Thirty years in a city that eats restaurants alive the way this one does means something.

I’ll probably do one more lunch there before April 12. I’ll sit by the window. I’ll order the salmon. I’ll look at the bill and say exactly what I’ve been saying since 1997. It’ll be worth it. It always was.