New nighttime traffic signal pattern for drivers on US-95 in Coeur d’Alene

Yellow traffic light on US-95 in Coeur d'Alene


Since mid-September, drivers in North Idaho may have noticed a change to late-night driving on U.S. Highway 95 through Coeur d’Alene. Previously, signals through the corridor used to flash yellow or red during late night hours to allow drivers already on the highway more mobility while traffic volumes were low. That pattern is no more, having been replaced by a detection and activation system designed to improve safety and prioritize northbound and southbound traffic flow.

“There are a variety of factors that influenced this change,” said Damon Allen, the district engineer for the Idaho Transportation Department (ITD). “The primary driving factor behind this change is safety.”

In recent years local law enforcement agencies have reported an uptick in late night near-miss crashes at signalized intersections with more drivers entering US-95 from side streets failing to yield.

“If you look at the data, moving away from any sort of nighttime flash pattern is trending nationwide, and the reason is safety,” Allen said.

According to ITD Engineer Manager Lee Bernardi who oversees the traffic section, problems arose from drivers on side streets not realizing that northbound and southbound traffic on US-95 had a flashing yellow light, rather than a flashing red. Signals are not designed for other-directional traffic to be able to see the lit color, so it’s understandable for a driver attempting to cross US-95 with a flashing red to assume opposing traffic also has a flashing red, and would treat it as a four-way stop rather than yielding to oncoming vehicles.

Bernardi continued, “As drivers, we’re conditioned to treat flashing red lights one way, and flashing yellow lights entirely differently. Maintaining complex intersections that combine these two conflicting behaviors, coupled with the amount of growth this area has seen in recent years, it’s logical to transition to a solution that eliminates assumptions on the part of motorists.”

In addition, updating to a nighttime activation system will keep the corridor uniform with the functionality of other signals throughout the area managed by local highway districts and cities.

“It makes sense for drivers to have the same expectations on all primary roadways in the area regardless of jurisdiction or time of day, and eliminating the nighttime flash on US-95 through Coeur d’Alene does exactly that,” said Allen.

The good news for drivers is that, despite this recent change, there should be a relatively low impact to their late-night mobility. Thanks to recent radar and detection equipment upgrades at every intersection along US-95 between Interstate 90 and Lancaster Road, each signal can operate independently of timing cycles and relies simply on a ‘see it and serve it’ strategy.

Each night, when the signals change over to the activation schedule, northbound and southbound lights are designed to rest on green, prioritizing the primary flow of traffic. Typically, the only time the flow of US-95 should be interrupted is when the signals detect either turning or cross-street traffic waiting at an intersection. The lights will quickly transition to serve those waiting vehicles and then get right back to green, rather than having to wait through a timing cycle for each lane. Likewise, cross street traffic should notice a decrease in wait times to get through an intersection.

“Our primary goal is to keep traffic moving,” said Allen. “We want drivers to remember that we are also in the business of efficiency, while maintaining a balance between mobility and safety for everyone on the road.”

Public invited to provide input on two Post Falls design alternatives as part of I-90 corridor study

Aerial view of I90 through the Post Falls corridor

The Idaho Transportation Department (ITD) will host an open house next week in Post Falls to present two design alternatives for the Post Falls area as part of the I-90 corridor study. Preliminary design alternatives include options to increase capacity and mobility in the Post Falls area, while modernizing the interstate’s infrastructure that was originally built in the 1960s and 1970s.

Open House Details

Date: Thursday, October 5

Time: 4 p.m. – 7 p.m.

Location: The Jacklin Arts & Cultural Center

405 N William St, Post Falls, ID 83854

“ITD received valuable feedback from the public and area stakeholders at our first open house last year. Our team has integrated that feedback into two modified alternative designs that use different approaches to improve congestion, mobility, and safety,” ITD Project Manager Erika Bowen said. “Our goal is to connect with the citizens of Post Falls to discuss these revised options and gather feedback on which alternative or features of the alternatives best improves travel for residents and businesses alike.”

The open house will feature two design alternatives adapted from the designs previously shared for public feedback in November 2022. Feedback collected in this round of public engagement will be used for an ongoing update to the master transportation plan for the city of Post Falls. Until additional funding is identified to complete the remaining analysis from Washington state line to State Highway 41, the corridor study through the Post Falls area will be on hold.

For those not able to attend the open house, an online option will share the same information and be available on October 5 at Comments submitted online before October 19 will be considered by the project team.

The I-90 corridor study is funded as part of Governor Little’s Leading Idaho initiative. The program allows ITD to accelerate project timelines to address rapid growth and build critical infrastructure today that would otherwise take many years to fund and build. Preliminary estimates value the improvements needed for I-90 between Washington state line and Coeur d’Alene at nearly $1 billion, which includes design, right of way and construction costs.

To stay up to date on the I-90 corridor project, visit and sign up for email updates.

Tree removal resumes Monday on SH-55

Tree removal on SH-55

Tree removal efforts will resume Monday on State Highway 55 between Banks and Horseshoe Bend to make it safer for drivers and improve overall forest health. Travelers should plan for 30-minute delays as crews cut down dead and dying trees on the highway between mileposts 72 and 79.

Crews will be on site each weekday from 8 a.m. to 4 p.m. for the next several weeks. No work will take place on Fridays or weekends.

This phase of tree removal has been contracted with Falling Timber Enterprise, LLC. Idaho Transportation Department (ITD) workers will provide traffic control and clean up the trees.

“We hope to cut down up to 100 trees on SH-55 with this phase,” Operations Field Manager Eric Copeland said. “Impacts will be very similar to the work we completed in this same area in July.”

ITD anticipates preparing another contract in the future to thin trees in the Smiths Ferry area.

Travelers are encouraged to check for any delays before leaving.

Nighttime detours planned for I-15/I-86 System Interchange next week

Overhead signage at the System Interchange

Beginning Monday and continuing through Wednesday, nighttime closures will be in place for a section of Interstate 15 and Interstate 86 at the System Interchange to allow crews to safely remove overhead signage.

One southbound lane will be closed on I-15, and the southbound ramp to I-86 will also be closed. Drivers looking to head west on I-86 will be detoured off the interstate at Northgate, west to State Highway 91, and then south to the Chubbuck Interchange. The closures will last from 9:30 p.m. until 5:30 a.m. each night.

Ongoing construction at the System Interchange will improve safety and mobility while replacing bridges built in the 1960s. Work is expected to be complete in 2025.

Motorists should exercise caution while travelling through the construction zone. Those wishing to receive email updates about the System Interchange project can sign up at

Drivers can also check or download the 511 app for the last traffic conditions on all state highways and freeways.


Daytime lane closure to start Saturday on the Perrine Bridge

Inspection underneath the bridge

Daytime lane closures are expected to start early Saturday morning on the Perrine Bridge while staff inspect the structure.

The routine inspection may take up to six days to complete, with crews on site each day between 5 a.m. and 3 p.m. Only one lane will be closed in one direction at a time. Work will not affect the sidewalks.

“We are starting this work early and on the weekend when there’s less traffic,” Bridge Asset Management Engineer Alan Buehrig said. “We will be using a special truck to inspect areas underneath the bridge and will move back and forth between both sides, so motorists should be prepared for one less lane in either direction, depending where we’re working.”

Drivers should plan for delays by checking as there is already active construction on the bridge. While the inspection will take less than a week, ongoing maintenance is planned through spring 2024.

Road closure starts tomorrow morning on Sunnyside and I-15 Business Loop

Idaho Falls Sunnyside Rd/I-15 Business Loop intersection

The Idaho Transportation Department and the city of Idaho Falls will shut down the southbound lanes of West Sunnyside Road/ I-15 Business Loop tomorrow morning at 5:00 a.m. The closure will last for three days.

The city of Idaho Falls will repair a broken water line under the southbound lanes of U.S. Highway 91. Traffic will be detoured, and no left turns will be allowed from northbound US-91 to westbound I-15. There will also be no right hand turns off I-15 Business Loop to southbound US-91 as those lanes will be closed.

Drivers should use alternative routes to avoid traffic delays.

For updates on traffic impacts on state highways and interstates, drivers should check before traveling.

Lane closures on the US-12 Clearwater Memorial Bridge

Clearwater Memorial Bridge

LEWISTON – Construction on the Clearwater Memorial Bridge will begin on Monday, September 18, and will close two lanes, leaving just one lane open in each direction.

Work over the next two years will widen the lanes, shoulders and sidewalks. Repairs will also bring the bridge up to current weight-rating standards to allow vehicles with heavier and wider loads to safely cross the bridge.

Starting on Monday only the sidewalk on the east side of the bridge will remain open. In early October, both sidewalks on the bridge will then be closed for eight months.

While both sidewalks are closed, a 24/7 shuttle will be available to transport pedestrians and bicyclists from one end of the bridge to the other. Shuttle users can access services at Locomotive Park or Liberty Mart North.

Click here to download additional information on the shuttle.

Travelers are encouraged to use other routes or leave extra time in their commute when congestion may be at its highest.

“We appreciate everyone’s patience and flexibility as we enter the construction phase,” Resident Engineer Curtis Arnzen said. “Having a wider, stronger bridge will enhance safety, functionality, and economic opportunity in the region.”

For more information about the project, please visit

Signal cabinets to be replaced in Soda Springs next week

Cones in truck

Beginning Monday, September 18, and continuing through Thursday, September 21, the Idaho Transportation Department will replace old signal cabinets in Soda Springs. The cabinets control the operation of the lights and are more than 30 years old.

Cabinets will be replaced at the following intersections:

  • Hooper Avenue and Third East Street
  • Second South Street (U.S. Highway 30) and Third East Street
  • Second South Street (US-30) and Main Street.

Replacements are expected to take one day per signal, during which signal heads will be covered and stop signs placed to guide motorists. Stop signs will not be used on US-30 to keep highway traffic flowing.

When complete the signals will operate very similar to before, but a flashing yellow arrow will be available to allow drivers to make additional left turns. The flashing arrow indicates motorists turning left should yield to oncoming traffic until it is safe to turn.

Travelers are reminded to know before they go and check or the 511 app for traffic impacts.

Free car seat check events across Idaho for Child Passenger Safety Week

A nurse talks with a mother about child passenger safety while a young child sits in a car seat.

BOISE–A car seat is the most important seat a child will ever sit in. National Child Passenger Safety Week (September 17- 23) is right around the corner and a great time to make sure your child’s car seat fits. The Idaho Office of Highway Safety (OHS) has partnered with organizations around the state for Child Passenger Safety Week and National Seat Check Saturday on Saturday, September 23, 2023.

Last year in Idaho there were 1,943 crashes involving a child passenger between 0-6 years old. According to the National Highway Traffic Safety Administration (NHTSA), car crashes are the leading cause of death for children in the United States.

“We all want to protect our kids as best we can, but car seats can be complicated even for experienced parents or caregivers,” said Carma McKinnon, State Child Passenger Safety Coordinator. “Seat Check Saturday is an opportunity to get free help from an expert, to ensure our little ones are as safe as possible.”

At these seat check events, certified child passenger safety technicians will check if a car seat is the right type for a child’s age and size, check that it fits correctly, and that it is properly installed in the vehicle.

Across Idaho, there are many free seat check events coming up on Seat Check Saturday and beyond:

Host Location Address City Date Time
St. Luke’s Pediatric Edu & Injury Prevention Program


Tomlinson South Meridian YMCA 5155 S Hillsdale Ave. Meridian 9/23/2023 10 am – 2 pm
Caldwell PD and Saint Alphonsus


Treasure Valley Community College 205 S. 6th Ave. Caldwell 9/23/2023 9 am – 1 pm
Thrive Pediatrics


Thrive Pediatrics 4470 N. Penngrove Way, Ste. 210 Meridian 9/30/2023 9 am – 1 pm


Hospital – Nell Redfield 150 200 W Malad City 9/22/2023 10 am – 2 pm
Soda springs


Caribou County Sheriff’s Office 475 E 2nd S Soda Springs 9/16/2023 10 am – 3 pm
Blackfoot PD


Blackfoot Police Station 501 N Maple St. Blackfoot 9/21/2023 2 – 5 pm
Pocatello PD


Pocatello Police Station 911 N 7th Ave Pocatello 9/23/2023 10 am – 2 pm
Rexburg Police Department


Madison Memorial Porter Park Rexburg 9/16/2023 10 am – 3 pm
Grease Monkey, Little Defenders and Idaho State Police, Idaho Community Hosp.


Grease Monkey 2100 Channing Way Idaho Falls 9/23/2023 11 am-2 pm
Teton Valley


Broulims Parking Lot 240 S Main St. Driggs 10/7/2023 11 am-1 pm
Steele Memorial


Steel Memorial 203 Daisy St Salmon 9/23/2023 10 am – 1 pm
Nampa PD


Nampa PD 820 2nd St S Nampa 9/21/2023 1 pm – 3 pm
Lapwai Health, Safe Start, Buckle Up for Life, Smith-Barbieri, Steele-Reese Found, Laura Moore Cunningham Foundation


Pi-Nee-Waus Community Center 504 N. Main St Lapwai 9/23/2023 10 am-1 pm
REO Safety Event St. Mary’s Health 701 Lewiston St. Cottonwood 9/18/2023 Book Your Class with Safe Start (
REO Safety Event Riverside Housing Playground Appaloosa Drive Kamiah 9/19/2023 Book Your Class with Safe Start (
REO Safety Event Orofino City Park 155 Wisconsin St. Orofino 9/22/2023 Book Your Class with Safe Start (
REO Safety Event Cup of Grace 31848 N 4th Ave Spirit Lake 9/26/2023 Book Your Class with Safe Start (
REO Safety Event The Library 601 N. Main St. Clarkfork 9/27/2023 Book Your Class with Safe Start (
REO Safety Event South Boundary Fire District 20 Stagecoach Rd. Naples 10/7/2023 Book Your Class with Safe Start (

For more information about child passenger safety and a map of year-round seat check locations visit

Final paving work in Bonners Ferry

Paving work on US-95 through Bonners Ferry

Beginning Monday, crews plan to begin a two-week daytime paving operation on U.S. Highway 95 between Labrosse Rd and Eisenhower St in Bonners Ferry.

The most significant impacts are anticipated to be between Sept 18-28 when the continuous paving work will temporarily affect business and side road access while the asphalt mat is laid and cured in front of driveways. This process typically takes one to two hours and alternate access routes will need to be used during these times.

Throughout construction traffic will remain one lane in each direction with flaggers assisting to allow truck access.

This operation will be very dynamic and subject to change to accommodate unforeseen circumstances, but we are doing our best to stay on schedule and minimize traffic impacts. Significant closures, delays or changes will be broadcast via roadside electronic messaging boards staged throughout the work zone. Please pay attention to local signage or refer to Idaho 511 for real-time updates. You may also subscribe to updates on the project website page.

As always, we urge drivers to slow down through work zones and use caution for the safety of all. Drivers should also watch for large trucks entering or exiting the construction site.

We appreciate your patience through this project and look forward to delivering a newly improved roadway to the community with an anticipated construction completion date set for mid-October!