Wisconsin photos

[agentsteel53]

and some Michigan and Minnesota...

https://www.aaroads.com/blog/?p=231

[froggie]

Regarding state-name I-shields in Minnesota:  they're getting harder to find in part because MnDOT dropped the practice in 1996.

[Stephane Dumas]

did you notice something in the state-name "I-35W MN" shield? Is it a old-school telephone wires along the roads or a old telegraph pole along an adjacent railroad?

[agentsteel53]

Regarding state-name I-shields in Minnesota:  they're getting harder to find in part because MnDOT dropped the practice in 1996.

why did they decide against them?

at least they kept the number the same size (10" on a 24" shield, as opposed to the garish 12")

[agentsteel53]

did you notice something in the state-name "I-35W MN" shield? Is it a old-school telephone wires along the roads or a old telegraph pole along an adjacent railroad?

I was not paying attention, actually.  I do not remember if there is a railroad running adjacent - what you see is what I know!

[froggie]

why did they decide against them?

As you may recall, the Feds dropped the state name from the Federal MUTCD by the late 80s.  It looks like MnDOT simply updated their standard signs to follow suit.

I was not paying attention, actually.  I do not remember if there is a railroad running adjacent - what you see is what I know!

Chances are, it was old school wires (which are all over the place in MN) and not a parallel railroad.