The first thing I thought of was trimming maybe an inch off each end of the bar.
I decided on the mid-mounted "bar ends" as a less nuclear option. I don't ride in tight traffic as much as you might, but even so, I don't need that much bar leverage on a road bike.
I may yet trim it down or may make a real investment in a narrower bar that has a little back-sweep. For now, this'll do.
I hope you find something suitable.
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-Jeremy