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ITD may not build unconventional “crossover” intersection on Eagle Rd. after all

BoiseDev Exclusive

Last month, the Idaho Transportation Department went public with details on a new-to-Idaho type of intersection that would set up a unique configuration for traffic.

Now, the plan could change.

BoiseDev first noted the project to build a partial continuous flow intersection at Eagle Rd. and State St. (aka Idaho 44) just over a year ago.

The transportation department issued a news release, explanatory video and saw extensive news coverage across the Boise area.

But, now it might not happen as originally planned.

“We are reassessing the final lane configuration for the Idaho 44 Eagle Rd. intersection project,” ITD communications manager Vince Trimboli confirmed to BoiseDev. “We are reassessing to decide if this is the best option or not, or if using a traditional intersection approach would be more consistent with a suburban expressway through Eagle.”

Public feedback

Trimboli acknowledged that the department decided to take another look at the plan for the intersection after public feedback and concern on the partial CFI design. The intersection would require drivers to make an unconventional traffic maneuver. Cars traveling along State St. that want to turn across traffic on to Eagle Rd. would shift to the left side of the road instead of the traditional right-hand side. In a video, ITD said the configuration is both “safer and more efficient” than a traditional intersection configuration.

After public feedback, Trimboli says ITD will take another look.

[With a nudge, ITD considers leaving Boise campus, with redevelopment possible]

“There’s not a great time to make a decision like this,” he said. “We do feel like it’s important to take a look at if a traditional intersection approach would be more consistent with what suburban expressway environment looks like.”

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Trimboli said that the current average delay above normal during peak drive times is currently 118 seconds – just about two minutes. With the displaced lane configuration, that delay would drop to 46 seconds, according to traffic engineers. But Trimboli said that revamping the intersection without the displaced lanes – a more traditional configuration – would put the delay at 60 seconds. That’s still an improvement of nearly 50% from the current traffic delay time, though it is higher than the CFI metrics.

Current peak delayPartial CFI peak delayTraditional intersection peak delay
ITD estimate118 seconds46 seconds60 seconds

Trimboli said the agency started reaching out to all the stakeholders involved – including the City of Eagle, COMPASS, ACHD and businesses in the area.

Regardless of the potential change in path – ITD will move forward on the project as planned.

“The lane configuration is the main change here,” Trimboli said. “We’re not looking at changing the existing right of way footprint, the budget or the schedule.”

Disclosure: ITD is a BoiseDev sponsor, with placement via a third party ad agency. It had no role in the selection or editorial process for this story.

Don Day - BoiseDev editor
Don is the founder and publisher of BoiseDev. He is a National Edward R. Murrow Award winner and a Stanford University John S. Knight Fellow. Contact him at [email protected].

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