I guess the spans aren't getting that ground-contact heating that the area's surface streets are getting.
My live-in daughter-in-law was determined to find an open urgent care this morning to get a flu test. Scheduled a test online at a Walgreen's walking distance from our house ... but when she drove there, it was still closed.
She's been driving the West Bank (Gretna-Harvey area) surface streets for the last two hours and change. Pulled through an open McDonalds somewhere and got lunch. She only reported one minor tire-slip somewhere on the ground-level Expressway. Otherwise, not bad to drive out there right now. Not ready to hazard any elevated roadways or anything over water ... but pipping around locally seems to be no problem.
EDIT: Update: Now my DIL is saying she was "sliding all over the place" while she was out and about. Not sure if she passed over any canals or culverts ... but knowing how it is around here, she probably passed over several.