Following a speed study of I-84 in the urbanized parts of the Treasure Valley, the Idaho Transportation Department (ITD) is reducing the speed limit on the western side of Caldwell to 65 MPH.
The current speed limit on I-84 traveling west goes from 65 MPH to 80 MPH after the Notus/Parma Exit (Exit 26). Due to the high number of vehicles using Middleton Exit (Exit 25) both east- and westbound coupled with varying speeds of thru traffic and merging vehicles, the Department determined a speed reduction was warranted. The 65 MPH speed zone will now extend west of Exit 25. Crews will place new speed limit signs today.
“We observed significant variations in speeds, with entering traffic speeding up to merge with I-84 traffic, which was slowing for the speed limit change,” said ITD Traffic Technical Engineer Erika Bowen. “This resulted in a number of near misses between cars on the Interstate and those looking to enter. Given the high demand at the Middleton Exit, we believe the change will improve the driving conditions in this area.”
ITD routinely studies sections of the State Highways System to ensure the safety, mobility, and economic opportunity of the traveling public is best served. Staff looks at the pavement condition, crash history, geometry, signage, and observed driver behavior when considering changes to the highway.
Over the last five years, growth near the Middleton Exit has seen an increase of 5,000 vehicles per day added to this section of I-84. During the evening commute, congestion often occurs at Exit 25 causing backups on the westbound off-ramps. ITD is looking at solutions for this separate situation to improve the efficiency of the interchange.
I-84 detours in Nampa have been extended due to equipment-related delays during the Karcher Overpass girder placement. A detour will be in place Tuesday and Wednesday nights (June 11 and 12) between the Karcher/Midland and Northside Boulevard interchanges.
Eastbound I-84 will be closed overnight Tuesday, June 11. A detour will begin at 10 p.m. Tuesday and end at 5 a.m. Wednesday, June 12.
Westbound I-84 will be closed overnight Wednesday, June 12. A detour will begin at 10 p.m. Wednesday and end at 6 a.m. Thursday, June 13.
Original Story (June 4)
ITD will require overnight closures on Interstate 84 in Nampa next Tuesday and Wednesday nights (June 10 and 11) to place girders on the new Karcher Road Overpass.
Eastbound I-84 will be closed overnight Monday, June 10. A detour will begin at 10 p.m. Monday and end at 5 a.m. Tuesday, June 11.
Westbound I-84 will be closed overnight Tuesday, June 11. A detour will begin at 10 p.m. Tuesday and end at 6 a.m. Wednesday, June 12.
Motorists will follow a detour route on Karcher Road both nights. See detour map below.
“ITD will place 10 steel girders over the two nights. Each girder is 136 feet long and weighs approximately 115,670 pounds,” said Alex Deduck, ITD Design/Construction Engineer. “This is no small operation and we appreciate the patience of the traveling public during the detour.”
ITD is replacing the Karcher Overpass to accommodate additional lanes on I-84. Construction to widen I-84 will begin later this summer.
For more information, visit itdprojects.org/84Corridor, text 84CORRIDOR to 22828 or listen to “Drive Idaho,” ITD’s new podcast series on I-84. Drive Idaho is available on Apple Podcasts, Spotify and other major podcast players.
Interstate 84 will be closed at night between the Franklin Road and Karcher/Midland interchanges April 22-26 while Idaho Power installs a new transmission line across the interstate. A detour will be in place each night between 10 p.m. and 5 a.m.
The detour route will follow Franklin Road (US-20/26) and Midland Road. Please plan ahead and expect delays when traveling in the area. Flaggers will direct traffic.
Idaho Power is installing a new transmission line across I-84. The transmission line will serve the new Skyway Ranch Substation east of the Franklin Road Interchange.
Detour map for I-84 overnight closures April 22-26, 2019
The Snake River Bridge will be reduced to one lane beginning Tuesday, April 9 in preparation for rebuilding the bridge.
What to expect at the Snake River Bridge:
Temporary traffic signals will be placed on both sides of the bridge to direct traffic.
Motorists should expect delays of up to 15 minutes.
The speed limit on the bridge will be reduced from 35 mph. to 25 mph.
The lane and the speed reductions on the Snake River Bridge will remain in effect until the bridge rebuild is complete. ITD will begin reconstructing the north side of ID-55 on April 9. Traffic will be switched to the south side of ID-55 in downtown Marsing while crews begin to reconstruct the north side of ID-55.
What to expect on ID-55:
Work will occur between 4th Avenue and Riverfront.
Work will occur during daytime hours.
Temporary traffic signals will direct traffic. Expect delays of up to 15 minutes.
Driveway access will remain open with brief delays.
Pedestrians are encouraged to use the south side of ID-55.
Construction of improvements to Idaho Highway 55 through downtown Marsing has begun. The project will rebuild the Snake River Bridge and repave the highway from the river to the U.S. 95 Junction. When complete, the project will enhance local business opportunities and improve safety and mobility through the area.
Initial work on irrigation lines began Monday, January 14. Major work includes replacing the School Drain pipe and C-Line Canal pipe. Traffic will be reduced to one lane and a temporary signal will direct alternating traffic. Work will be limited to daytime hours, though the lane closure and signal will operate 24/7 for the next 3-4 weeks.
ITD invites the public to an open house to review the final construction plans for this project. The open house will be held Thursday, Jan. 24 from 4 to 7 p.m. at the American Legion Hall in Marsing (126 2nd Ave. W). Attendees will have an opportunity to view construction plans for the new Snake River Bridge and ID-55 improvements, ask questions of project staff, and learn how to stay informed during construction.
“We are encouraging motorists to plan extra time when driving through the areas during construction,” said David Barrett, ITD Project Manager. “We are improving a major route used to haul agricultural products and move people to and through a beautiful part of Southeast Idaho.”
Work to rebuild the bridge will begin in earnest this spring. During construction, one lane of the bridge will be open to traffic with a 14-foot width restriction. The new bridge is expected to be complete by the summer of 2020.
The contractor for this $20.9 million project is Wadsworth Brothers Construction out of Salt Lake City, Utah.
BOISE – Construction is underway on improvements to the Cloverdale Overpass bridge and Cloverdale Road between Franklin Road and Camas Drive.
The Ada County Highway District and the Idaho Transportation Department transportation are joining together to replace and widen the damaged Cloverdale overpass bridge, and widen and improve the sections of road adjoining the bridge. Cloverdale Road will remain closed between Franklin Road and Camas Drive during construction, but one lane of travel in each direction will be open by June 15, 2019. Details of the improvements are listed below.
The public will experience immediate impacts of the construction as crews demolish the damaged bridge over Interstate 84. All eastbound lanes and two westbound lanes of I-84 will be closed overnight Monday (December 3) from 9 PM to 5 AM Tuesday morning. All westbound lanes and two east bound lanes of I-84 will be closed overnight Tuesday (December 4) from 10 PM to 6 AM Wednesday morning. Please refer to the map below for detour routes.
Idaho State Police will increase patrols to promote safe driving behavior in the work zone. The work zone may contain hidden hazards and the public is advised to stay out of the area. Pedestrian and bicycle traffic has been allowed to use the existing Cloverdale Overpass, but following demolition that route will be unavailable.
Throughout construction, access to local businesses and residences on Cloverdale Road will remain open. The work will include, but not be limited to: general construction noise, dust, equipment backup alarms and ground vibration. There may be some night work, but typical work hours on Cloverdale Road will be 7 AM to 8 PM.
This project will construct the following improvements:
Replace and widen the Cloverdale overpass bridge
Widen Cloverdale Road to two travel lanes in each direction with a center turn lane
A raised bike lane, curb, gutter and sidewalk on both sides of the roadway
Install an upgraded pedestrian signal at Emerson Drive and Cloverdale Road
Shoulder restrictions will be in place on Interstate 84 in Nampa at the Northside Boulevard interchange July 9-12. Crews will be driving test piles in the center median as part of early prep work for ITD’s Northside Interchange Replacement Project.
Pile driving will be done during the day; this work is noisy. No lane closures are anticipated, but drivers are urged to slow down and pay attention in the work zone. Crews will set up traffic control and a work zone the night of July 9 and are anticipated to be complete by the end of the week. Learn more at itd.idaho.gov/84corridor.
This work was originally scheduled to take place June 18-20. It was delayed due to wet ground conditions.
BOISE – Bridge preservation work on the Emerald Street overpass of I-184 (the Connector) between Cole Road and Curtis Road, is complete. The bridge reopens to all traffic beginning Saturday morning (May 19).
Preservation work on additional Treasure Valley bridges will continue this summer at the following locations:
I-84, Meridian Road Interchange
I-84, Broadway Avenue Interchange
I-84, Cole-Overland Interchange
I-84, Gowen Road Interchange
Broadway Avenue, Boise River Bridge
Unlike at Emerald, remaining work will not require full closures and most work will be completed at night. Motorists can expect lane reductions and reduced speeds.
“Bridge preservation work is intended to strengthen the bridge surfaces and extend the life of the pavement, reducing the need for additional maintenance at a later date,” said Crystal Grasmick, ITD Project Manager. “We appreciate the traveling public’s patience as we work through these important improvements.”
Cannon Builders, Inc. is the contractor on this $2.7 million project. For up-to-date traffic impact information, visit 511.idaho.gov.
Nighttime lane restrictions will begin in tonight, Wednesday May 16 on Front Street, Myrtle Street and Broadway Avenue in Boise as the Idaho Transportation Department prepares to repave all three roadways.
The project will include milling off the worn asphalt and replacing it with new pavement. Construction is anticipated to begin on Myrtle Street, then move to Front Street, and on to Broadway Avenue in late June or July.
The repaving work is expected to be completed in late summer.
Work includes:
• Myrtle Street between I-184 (Connector) and Broadway Avenue
• Front Street between I-184 (Connector) and Broadway Avenue
• Broadway Avenue between Rossi Street and the New York Canal north of I-84
The majority of construction will occur from 8 p.m. to 6 a.m. All lanes will be open during the day. Occasional work will be scheduled on Friday and Saturday 10 p.m. to 7 a.m.
During nighttime paving operations, two lanes will be open on Front and Myrtle Streets. One lane will be open in each direction on Broadway Avenue.
“To get construction updates, sign up for emails or text messages from the ITD Office of Communication,” said ITD Southwest Idaho Resident Engineer Jayme Coonce. “Dates and plans can change quickly due to unpredictable weather and other factors. ITD will send regular updates to keep motorists, residents and businesses informed.”
To request email updates, text US2026 to 22828. Updates also will be posted to itd.idaho.gov/D3.
ITD estimates 30,000 vehicles travel on Myrtle, Front and Broadway each day. The U.S. 20 resurfacing project is expected to extend the pavement lifespan approximately 10-12 years.
Sunroc Corporation, of Boise, is the contractor for $3.14 million project.
