From an email:
We sincerely apologize for the backup you experienced on Shore Drive yesterday. Unfortunately, we did not anticipate the need for the lane closure on Lesner Bridge. Our lane closures for the Lesner Bridge construction project usually take place at night in order to avoid the serious delays you experienced yesterday.
As a matter of public safety, the emergency lane closure that was put in place yesterday was to alleviate a potentially dangerous situation that was created by incomplete temporary pavement markings at the Vista Circle/Shore Drive intersection. We could not keep both THRU lanes open with this condition until it was corrected. The correction is being made now, and the plan is to have the lanes re-opened for this evening’s rush hour (5:00 PM).
Again, I apologize for the short notice.