The way that I look at it is that particular section of Broad has always been an awful bottleneck, with the additional traffic dumping out from the off ramp. The new courthouse added additional traffic. With those two issues alone, I have no problem with the transition adding a 3rd lane. Even if they was to add a bike lane instead (the demand for it is very questionable on Broad IMO, with no 'source' to start) it would be a certainty to stop at State St, not that far away.
The article wasn't about adding a bike lane on Jefferson and Broad Streets. It was just highlighting restriping as an inexpensive way to enhance travel on existing streets.
In the case of Jefferson and Broad, an extra travel lane was added. On Adams, a travel lane was removed to add parallel parking spaces that were lost on Broad, as a part of the conversion.
Instead of debating whether this is the right use of roadway width on these two streets, we should be looking at restriping on wide streets like Park, Adams, Bay, Hubbard, Edgewood, Myrtle, Oak, Forest, etc. as a quick and cost effective way to improve pedestrian and bicycle connectivity and safety throughout the city.
FYI, the article isn't about adding a bicycle lane on Jefferson and Broad Streets. It was to point out