Highways numbered 666 - which states have them?

[US 89]

I know, of course, that US 666 in Colorado and New Mexico was famously renumbered to US 491 a while back, because of sign theft, I believe.

US 666 went through Utah too... 

And yes, it was sign theft. The three states literally couldn't keep the road signed and people were apparently getting lost. That combined with a high fatality rate on New Mexico's portion (dangerous 2-lane highway with a good amount of traffic and a lot of drunk driving incidents) meant conditions were ripe for a renumbering. NM was the main driver behind that effort.   

666 also used to go west from Gallup and down to Douglas AZ, but the extension of US 191 provided a great opportunity for Arizona to renumber their portion.

And I believe the last traces of US-666 were around Monticello, UT when UDOT had unisigns noting the conversion (NEW US-491 IS THE FORMER US-666).  Those signs were finally removed around 2007-08.

There is a “491, Former 666” reassurance marker still standing in Gallup, northbound shortly after the route begins at I-40.

[ethanhopkin14]

I know, of course, that US 666 in Colorado and New Mexico was famously renumbered to US 491 a while back, because of sign theft, I believe.

US 666 went through Utah too... 

And yes, it was sign theft. The three states literally couldn't keep the road signed and people were apparently getting lost. That combined with a high fatality rate on New Mexico's portion (dangerous 2-lane highway with a good amount of traffic and a lot of drunk driving incidents) meant conditions were ripe for a renumbering. NM was the main driver behind that effort.   

666 also used to go west from Gallup and down to Douglas AZ, but the extension of US 191 provided a great opportunity for Arizona to renumber their portion.

And I believe the last traces of US-666 were around Monticello, UT when UDOT had unisigns noting the conversion (NEW US-491 IS THE FORMER US-666).  Those signs were finally removed around 2007-08.

There is a "491, Former 666"  reassurance marker still standing in Gallup, northbound shortly after the route begins at I-40.

Bang!

[Max Rockatansky]

I know, of course, that US 666 in Colorado and New Mexico was famously renumbered to US 491 a while back, because of sign theft, I believe.

US 666 went through Utah too... 

And yes, it was sign theft. The three states literally couldn't keep the road signed and people were apparently getting lost. That combined with a high fatality rate on New Mexico's portion (dangerous 2-lane highway with a good amount of traffic and a lot of drunk driving incidents) meant conditions were ripe for a renumbering. NM was the main driver behind that effort.   

666 also used to go west from Gallup and down to Douglas AZ, but the extension of US 191 provided a great opportunity for Arizona to renumber their portion.

And I believe the last traces of US-666 were around Monticello, UT when UDOT had unisigns noting the conversion (NEW US-491 IS THE FORMER US-666).  Those signs were finally removed around 2007-08.

There is a "491, Former 666"  reassurance marker still standing in Gallup, northbound shortly after the route begins at I-40.

Bang!

So basically watch eBay if you are sign collector?

[OCGuy81]

Might be a tangent, but are there states that won't issue 666 on license plates? I know Oregon does as one of my cars has plates starting with 666