I haven't been to Birmingham since 20-59 reopened, but I saw a video that Cody posted on Facebook and... there are two major signage boogerups that I saw, both on the westbound side.
First, about 3000 feet before the US 31-280-Carraway Blvd. exit, they've placed an enormous APL-like monstrosity that bears no resemblance to anything in the MUTCD, and which is unneeded because there's not a multilane exit with an option lane there. This huge sign calls out all the Interstates and their destinations (except for I-22 and Memphis, of course) as well as US 31-280 et al. However, considering that the previous assembly calls out I-65 at the 2 mile mark, and that there are at least two perfectly legit APL's between the 31-280 interchange and I-65, all that's really needed is a conventional sign for US 31-280 et al, 1/2 mile.
Upstream from there is another mess: conventional signage with everything mounted a lane too far to the left, plus an MUTCD-noncompliant white down arrow pointing to the incorrect lane for the US 31-280 exit. Putting way too much effort into it, I figured out:
Originally there was
this overhead Aside from its iconic slatted design, matte finish and diagrammatic arrow, the two right signs were mounted a lane too far left because the 31st Street offramp being just beyond the bridge made it infeasible to put the 31st Street arrow sign at the theoretical gore where it ideally should be. No big deal, really. Shit happens with '60's highway design.
Then, at some point, the slatted signs were cloned into modern ones, the offramp to 31st Street was lengthed greatly, and the signs were thus installed on a new gantry at the theoretical gore of the new offramp. However, when the new signs were installed there, the new offramp was barely even started, so again they placed the 31st Street arrow sign over the right mainline lane.
This Streetview is from March 2017.
Unsurprisingly, when the new 31st Street offramp was completed, the signs
were not moved rightward to their correct location, probably because it wouldn't be long until the viaduct would be closed and something else would have to be done with the signs there. This Streetview is from February 2019.
Then, all of the signs were replaced, which obviously means that they were remounted. 31st Street became 31st Street, 12th Avenue and BJCC. Unfortunately, the new sign was mounted over the mainline instead of over the offramp! And, the distance legend for the US 31-280 exit was replaced by a white down arrow, which, because the signs are too far left, points to the incorrect lane! WTF? Finally, there are two conventional signs for I-65 north and south, which, other than message overload, I don't see a problem with.