Whoever does signs for ODOT is absolutely awful.
https://drive.google.com/file/d/1aBs-2wtNhbht6m_HUhQkGwsMtPJdfQmR/view?usp=share_link
That doesn't look like an ODOT install. Probably installed by Canal Winchester.
Whoever is doing this, they goof these shields up all the time around Columbus. Maybe it doesn't matter since each road has a unique number, but the lack of attention to detail still bugs me.
It's a perfect 3dUS shield, and the number is right. Could be worse.
ODOT put a US 317 shield on a BGS on 270 a few years ago. Also perfect, aside from the wrong kind of route of course.
I remember that, but at least they covered it over in pretty short order. Some of these shields hang around for years.
Seems to happen fairly frequently.
A number of years ago, they had US 202 shields at the end of the ramps to OH 202 from I-70 in Huber Heights. They fixed them eventually.
There was a narrow (2-digit width) median-mounted US 315 shield on OH 315 SB in Columbus near the Goodale exit for a number of years, now gone.
When the US 30 dual carriageway opened from OH 235 to Upper Sandusky in November 2007, there were several goofs standing on opening day (I drove through a couple hours after it opened): two BGSs westbound for US 68 had OH 68 shields, later covered with green-background US 68 shields; on the ramp from US 30 WB to OH 235, there is a US 235 shield which is still there, over 15 years later.
Back around 2016 they replaced a shield assembly at the WB beginning of OH 309 in Mansfield with a very large US 309 shield. (If it had said "30S" they maybe could have gotten away with it.
Fairlawn replaced signs all along its stretch of OH 18 in late 2015, and US 18 shields appeared. They were replaced in a few weeks with horrible shields with numerals that are possibly Clearview.
They seem to happen pretty widely, but then again they do in all other states too to some extent.