Idaho

[Great Lakes Roads]

https://www.youtube.com/watch?v=mkxGZLutwrI

The interchange in Jerome on Interstate 84 (Exit 168) is very (I don't know how to describe it)!

[Alps]

https://www.youtube.com/watch?v=mkxGZLutwrI

The interchange in Jerome on Interstate 84 (Exit 168) is very (I don't know how to describe it)!

Rotary. (looks like some old ones Mass has around)

[Plutonic Panda]

Plans to replace The Rainbow Bridge(SH-55) are underway: https://www.roadsbridges.com/bridge-construction/news/55055657/idaho-transportation-department-to-replace-100-year-old-bridge

[D3r3k23]

Never seen a SPUI shifted like that. I wonder where else you can find one.

There is a similar SPUI at Interdtate 225 and Alameda Avenue in Aurora, Colorado.

As well as another one at St.Paul, Minnesota at I-694/Rice St. where a former diamond interchange was converted into a SPUI.
https://goo.gl/maps/kxqz78NCUJyjtUq36

Of courses there's one in LA as well.
https://maps.app.goo.gl/FioH9qPJf14rS5417

[Plutonic Panda]

A portion of I-15 will be widened:

https://www.idahostatejournal.com/townnews/highway/idaho-transportation-department-begins-construction-project-to-widen-i-15/article_84fb6620-5e63-11ef-b3b8-63aba11d498a.html

[webny99]

Not a good morning to be commuting in the Boise area: I-84 EB was closed at Exit 33 earlier, and seems to have reopened now but there must be some lanes still closed. There's still over an hour delay for I-84 EB traffic, and the spillover effects are so bad that US 20/26 is backed up for miles heading east from I-84 in Caldwell, and even ID 44 is backed up for about 2 miles in Middleton, which I have to assume is very rare without knowing too much about typical traffic patterns in the area. You're looking at a minimum of 1 hour to get from Caldwell to Boise.. typically a 30-35 minute trip with no traffic.

[Great Lakes Roads]

A new freeway (SH 16) is currently being built in the Treasure Valley... the full freeway buildout from I-84 to SH 44 will be complete by 2027!

[andy3175]

A very bad crash on US 20 near the intersection with Idaho Highway 87 between Idaho Falls and West Yellowstone resulted in multiple fatalities.

https://cowboystatedaily.com/2025/05/02/eyewitness-recounts-very-horrific-crash-that-killed-7-outside-yellowstone/

A Dodge Ram pickup and a Mercedes passenger van collided Thursday (May 1, 2025) evening about 15 miles from the west entrance of Yellowstone National Park, killing seven people: six in the tour van and the lone occupant of the pickup, authorities say. Several minutes after the crash, both vehicles caught fire, an eyewitness says.

Idaho State Police responded at about 7:15 p.m. Thursday to Highway 20 near Henry's Lake for a collision between the pickup and tour van, says a statement the agency released Friday. There were 14 people in the van, and six of them died. The driver of the pickup also died in the crash, the statement says.

Authorities hadn't released names, ages, hometowns or nationalities of the deceased as of Friday morning because of the "magnitude of the incident and the ongoing process of notifying the next of kin," the statement says.

Roger Merrill arrived on scene about five minutes after the crash and watched its aftermath. He took a short video that includes the following devastating image:



As the investigation is ongoing, it is not yet clear how the accident occurred.

[Stephane Dumas]

A new freeway (SH 16) is currently being built in the Treasure Valley... the full freeway buildout from I-84 to SH 44 will be complete by 2027!

That's good to hear, I saw a satellite photo showing the construction grading at the I-84 interchange.
https://mapper.acme.com/?ll=43.60009,-116.47739&z=16&t=S

[splashflash]

https://www.spokesman.com/stories/2025/jul/14/a-legacy-project-new-section-of-us-highway-95-open/

A 26-year dream to make U.S. Highway 95 a four-lane highway between Moscow, Idaho, and Lewiston is almost a reality.

The long-awaited four-lane, 6-mile stretch of Highway 95 from the southern end of Moscow to Reisenauer Hill opened to drivers earlier this month, according to the Idaho Transportation Department. About one more mile of widened highway and a bridge over Thorn Creek, which are expected to be finished this fall, is all that's left to complete.

The new highway has been repeatedly delayed over the years by an environmental group's lawsuits challenging the transportation project.

The nearly $90 million highway realignment not only creates more lanes, but makes the road straighter, flatter and safer, according to Megan Jahns, ITD senior public information officer in Coeur d'Alene. The old two-lane highway has sharp curves, steep hills and several driveways intersecting the highways, leading to several injury and fatal crashes over the years, Jahns said.

[pderocco]

https://www.spokesman.com/stories/2025/jul/14/a-legacy-project-new-section-of-us-highway-95-open/

A 26-year dream to make U.S. Highway 95 a four-lane highway between Moscow, Idaho, and Lewiston is almost a reality.

The long-awaited four-lane, 6-mile stretch of Highway 95 from the southern end of Moscow to Reisenauer Hill opened to drivers earlier this month, according to the Idaho Transportation Department. About one more mile of widened highway and a bridge over Thorn Creek, which are expected to be finished this fall, is all that's left to complete.

The new highway has been repeatedly delayed over the years by an environmental group's lawsuits challenging the transportation project.

The nearly $90 million highway realignment not only creates more lanes, but makes the road straighter, flatter and safer, according to Megan Jahns, ITD senior public information officer in Coeur d'Alene. The old two-lane highway has sharp curves, steep hills and several driveways intersecting the highways, leading to several injury and fatal crashes over the years, Jahns said.

Funny you just mentioned it, as I drove it a couple days ago. I hadn't been aware of it, but saw the peculiar display in Google Maps, with the US-89 shield on the new road, and the green traffic stripes on the old road (even though it was closed). So I figured out that there was a new alignment, and I should refresh my clinch. Nice road, although so was the old one from a scenery point of view.

[Bruce]

Some recent drone footage of the section:

[Amaury]

I've only driven the current—what will be the old—section a few times, but I haven't had any issues. The new highway does look awesome, though, just like the section of US 12 did when it was first new between Walla Walla and US 730. And I'm sure the old section will remain accessible as Old Highway 95.