daknife wrote:US 89 Scenic is marked as such. So how it can be so marked and not be so is beyond me.
Like CBenson said — that route is called, and signed as, "US-89A". That's the route designation. Local names ("Fredonia-Vermilion Cliffs Scenic Road") have no bearing on road type. The only route designated as scenic
is US-40 Scenic in Maryland. US-412 ALT in Oklahoma was called US-412 Scenic until 2012.
As to the other segment, it's not in competition with the Interstate or US 89, but with other arterial routes (I don't recall the SR designators at the moment. SR-73 and 114 are both almost 100 miles away from where I am referring to.
In this case were I to mark that section of road as a Major Hwy it would get routing preference over the Minor Hwy routes that are the arterials the one it comes off of is under construction and does see major slowdowns, the other end of that segment is a primary street and is a suggested detour, but not through that neighborhood, the detour is at a higher capacity intersection and connector, but if I suddenly change the segment to Maj Hwy, it WILL dump a lot more traffic onto a road that cannot and should not handle it.
Sorry, I assumed you were talking about American Fork. You'd have to show me what you're talking about. For starters, "Historic Lincoln Highway" is a local name, not a US route designation, so it has no bearing on road type, if that's what you're worried about.
As an aside in looking for US-89A signs in streetview, I got confused with state 89A and saw this sign
, which makes it look like someone keeps routes around for their historical significance alone.
Well, not exactly. Some state highways have elected to mark "Historic Route 66", but US-66 was deleted by the AASHTO/FHWA/whatever in 1985.