Interstates Routes Entirely Multiplexed...

[roadman65]

Agreed there. That is why it is so great they gave the Future I-49 in Miller County an AR designation instead of moving US 71 on to it.  Even though not allowing I-49 to be on it was for other reasons it worked out that they did invent a state route number so that US 71 stays where its at.

[bugo]

The route south of Texarkana is not "Future I-49", it is AR 549.  It will one day be I-49 (probably within the next year) but it is not signed "Future I-49" and is not known as such.

[roadman65]

I did not mean "Future I-49" as being its official route number.  I meant it literally as it will be future I-49 as in someday when LA and AR connect the the two freeways.  I believe I said it was AR 549 and complimented AHD for thinking of that one in the same manner as DelDOT did by giving the St. George Canal Bridge in Delaware a "BYPASS US 13 designation before the DE 1 Turnpike was finished.  Now US 13 could remain its original alignment through St. George, DE instead of designating it another road to go back later.