The Idaho Transportation Department will shift northbound Interstate 15 traffic between the Northgate and Fort Hall interchanges (Exits 73 and 80) the night of Wednesday, Nov. 12. Northbound traffic will move into the newly constructed lanes in the median to allow crews to begin work on the east side of I-15.
During the traffic shift, motorists can expect:
- The northbound on-ramp at the Northgate Interchange (Exit 173) will close for a few hours on Wednesday night, Nov. 12.
- Lane closures may occur in the project area.
After traffic is shifted, motorists can expect:
- Two lanes will remain open in each direction on I-15 during the daytime.
- A concrete barrier will separate opposing lanes of traffic.
- Reduced speeds in the work zone.
Once the new northbound lanes are completed in late 2026, crews will complete the southbound lanes on the west side of I-15. Construction on the I-15 Northgate to Fort Hall widening project is anticipated to be completed in 2027. This project is funded by Governor Little’s Leading Idaho initiative and will result in three lanes in each direction on I-15.
For more information and to sign up for email or text updates visit itdprojects.idaho.gov/pages/i15northgatetoblackfoot or call 208-252-5553.
The safety of motorists and construction crews is ITD’s top priority during construction. When driving through the work zone, please stay alert, follow work zone signage and drive the posted speed limit. Drivers are encouraged to plan extra time when traveling through the project area and check 511.idaho.gov or the 511 mobile app for the latest updates on restrictions and delays.
The Idaho Transportation Department will begin roadside work Nov. 13 to repair the Elijah Drain culvert beneath State Highway 45 (12th Avenue) near West Dewey Avenue.
SH-45 will remain open throughout construction. Traffic impacts are not expected until mid-December when crews start working along the shoulder. Drivers should expect short lane shifts or brief flagging operations as needed. Most traffic impacts will occur at night to reduce delays for daytime travelers.
Nearby businesses will remain open and accessible during construction, and no driveway closures are planned.
The work will protect the roadway structure and ensure SH-45 continues to serve the growing Nampa community safely. Construction is expected to continue through spring 2026.
Drivers should watch for crews and equipment, obey posted signs, and slow down when traveling through the work zone.
For real-time traffic updates, visit 511.idaho.gov or use the Idaho 511 mobile app.
Drivers on State Highway 55 should expect short delays Wednesday as the Idaho Transportation Department installs a new digital message sign in Round Valley.
A crane will be on site beginning at 10 a.m. and continuing through the afternoon to set the overhead sign structure at milepost 102 just south of Cascade near the descent toward Rainbow Bridge.
During installation, crews will reduce SH-55 to a single lane with alternating traffic. A full closure of up to 15 minutes may be needed while the structure is lifted into place to keep travelers safe from the suspended load.
The new sign will make SH-55 safer by providing real-time alerts about wildfires, delays, and other emergencies along one of Idaho’s busiest mountain corridors. Limited cell service in the canyon makes roadside communication especially valuable for drivers. Drivers can expect the sign to be operational by the end of the year.
Motorists should slow down, follow flagger directions, and watch for crews and equipment in the area.
For the latest updates on traffic impacts and road conditions, visit 511.idaho.gov or download the Idaho 511 app.
The Idaho Transportation Department advises motorists to prepare for nighttime closures over the next month on Franklin Road between Star and McDermott roads as crews place eight steel girders for the future State Highway 16 and Franklin Road Interchange. The girders are horizontal support beams for the bridge, estimated to weigh approximately 184,000 pounds each and will be installed in parts throughout the month of November.
Motorists can expect:
- Franklin Road will be closed at night from 8 p.m. to 8 a.m. from Star to McDermott roads.
- Closures will begin Saturday, Nov. 8, and will take place throughout the month.
- Traffic will be detoured to Cherry Lane.
When complete, the Franklin Road Interchange will allow through traffic on SH-16 to travel over Franklin Road without stopping. The SH-16 and Franklin Road Interchange is expected to open with the entire SH-16 corridor in 2027.
For more information and to sign up for email or text updates visit itdprojects.idaho.gov/pages/sh16corridor or call 208-334-8008.
Drivers are encouraged to plan extra time when traveling through the area at night and check 511.idaho.gov or the 511 mobile app for the latest updates on restrictions and delays.
State Highway 16 will be fully closed south of State Highway 44 the weekend of Nov. 7-10 as the Idaho Transportation Department installs a drainage structure underneath the highway. SH-16 will be closed between SH-44 and US-20/26. Traffic will be detoured to Star and Linder Roads.
Closures will begin at 9 p.m. Nov. 7 and will end at 5 a.m. Nov. 10. Work will result in significant noise during this time.
Crews will install a drainage structure, also called a box culvert, underneath SH-16. The structure will be 495 feet long and comprised of 86 individual pieces, each measuring 8 feet wide by 6 feet tall and weighing an average of 22,500 pounds.
The culvert is being installed as part of the work on the future SH-16/SH-44 Interchange, which will connect SH-16 to Interstate 84. The new SH-16 corridor is on track to open in 2027.
Motorists are encouraged to text HIGHWAY16 to 1-866-483-8422 for email or text alerts. For maps and details about the project, please visit itdprojects.idaho.gov/pages/sh16corridor.
COEUR D’ALENE – Drivers should plan for delays this Sunday on eastbound Interstate 90 between Post Falls and Coeur d’Alene as crews complete striping in the work zone to expand the freeway to four lanes. Work will begin around 7 a.m., with traffic reduced to one lane and the speed limit lowered to 45 mph throughout the day.
“This is one of the last weather-dependent tasks we have to complete before winter, and this weekend just might be our last chance to do it with the conditions needed,” Project Manager Tom Trutter said. “We’re doing it Sunday when traffic is lighter, but congestion is still expected so we’re asking drivers to plan extra time and be patient through the work zone.”
Due to the temperatures needed for the paint to dry properly, this work cannot be done overnight.
In addition to this work, new variable speed limit signs will soon be activated along the I-90 corridor during the expansion project. These digital signs allow ITD to adjust posted speeds for safety when crews are working close to traffic. As a reminder, drivers are required to follow the posted speed limit at all times and should not rely on in-car navigation systems or GPS devices through the work zone, as they may differ from the posted speed.
This five-mile stretch of I- 90 from State Highway 41 to U.S. Highway 95 is the most heavily traveled and congested area in the corridor. This is the first construction project to advance from the I-90 Corridor Study from SH-41 to 15th Street to enhance safety and add capacity to support future traffic volumes.
Construction began in August of 2025 and is expected to be complete in 2029.
To stay informed about project updates, impacts and milestones, drivers can sign up for email and text updates at I-90 Widening: SH-41 to US-95 | ITD Projects.
The Idaho Transportation Department advises motorists of an upcoming closure of the eastbound off-ramp on Interstate 90 at Cataldo scheduled to begin Monday. The closure is part of the ongoing bridge replacement project and is expected to last at least three weeks, depending on weather and construction progress.
During this time, eastbound drivers will not be able to exit at Cataldo. Travelers should use the Kingston Exit and return on I-90 westbound to access Cataldo.
The closure will allow crews to remove a temporary ramp and repave portions of I-90 and the existing ramp area needed to shift both lanes of eastbound traffic onto the new bridge for winter.
“We need a short window of decent weather to pave and stripe before winter conditions set in,” Project Manager Megan Koski said. “Our goal is to open the new eastbound bridge to traffic before Thanksgiving, but that will largely depend on how the weather cooperates.”
Because the eastbound off-ramp is part of the detour route for the adjacent Canyon Road Bridge replacement by the East Side Highway District, drivers in the area should expect an updated detour and follow locally posted signs. Questions specifically regarding the Canyon Road Bridge replacement should be directed to the East Side Highway District.
This closure is necessary to ensure safe travel through the work zone during the upcoming winter season. ITD appreciates the public’s patience, and safe driving, as crews complete this important milestone.
Depending on winter conditions, there may be work that is able to be accomplished through the snowy months that will set the stage for the next phase of construction. Drivers may expect to see short duration work zones set up through the area, including the possibility for intermittent single lane closures. Next spring large-scale work will begin to repeat the process of demolition and replacement of the westbound bridge to complete this project.
For the most up-to-date information on road conditions and traffic impacts statewide, visit 511.idaho.gov, download the Idaho 511 app, or call 511.
Starting Monday crews will resume work on rocky slopes near Riggins on U.S. Highway 95.
South of Riggins at milepost 189 in the vicinity of the Sheep Creek Rest Area, scalers will install reflective prisms on the rock face above the roadway to monitor slope movement and will remove loose rocks for safety.
Intermittent delays of up to 20 minutes between the hours of 8 a.m. and 6 p.m. are likely for the next week. Flaggers will hold traffic in both directions to keep everyone safe with rocks coming off the slope. Crews will periodically allow one lane of traffic through the work zone.
North of Riggins at milepost 196.5, in the vicinity of “Bull’s Eye Corner,” crews will also close the shoulder and replace damaged signs as part of safety efforts that started last fall.
Rocks may be present in the roadway and motorists should always exercise caution when traveling though this river corridor.
Live traffic impacts across the region can be found by visiting 511.idaho.gov. Travelers can also dial 5-1-1 or download the app.
The Idaho Transportation Department will begin repairs on Monday to the Vineyard Bridge over Interstate 84 west of the Kimberly Interchange.
The bridge has been closed to traffic since being damaged last year by a driver hauling equipment that exceeded height restrictions and struck the bridge. Work is expected to be completed by mid-December after which the bridge will reopen to traffic.
The project will replace four girders, which are horizontal support beams for the bridge, and install a new bridge deck over the affected section. The total cost of the work is approximately $605,000. The expense will be reimbursed to ITD by the private entity responsible for the damage.
“We knew it was going to take about a year to get this bridge repaired,” Project Manager Kenny Lively said. “With the bridge being important for some farmers, it is great to be able to get this bridge back up and running.”
For project updates and travel information, drivers can visit 511.idaho.gov or download the Idaho 511 app.
Travelers on U.S. Highway 95 and State Highway 3 should plan for flagging operations to be in effect next week as the Idaho Transportation Department conducts valuable geotechnical investigations on these routes. Operations will involve boring into the roadway to allow ITD to plan for resurfacing projects scheduled to be completed next year.
Work on SH-3 will begin on Monday and run from milepost 13 to 18 at the bottom of Bear Ridge Grade. Traffic will be reduced to one lane, with flaggers indicating movement for each direction. Delays are expected to be less than 15 minutes. This work zone will be active for just two days, with exploratory drilling anticipated to be completed on Wednesday.
Escape ramps and turnouts in this vicinity of SH-3 will be closed while work is underway. A traffic control crew will notify truckers at the brake check area on the top of the grade.
One lane will also be closed on US-95 beginning next Wednesday from milepost 241 to 251 near Grangeville in the Johnston Road area. These efforts are expected to be completed by Friday.
The work schedule is subject to weather conditions and may change. Updates and information on these work zones and others across Idaho can always be found on the Idaho 511 app or by visiting 511.idaho.gov.
