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Cassia County

County road alerts, weather impacts, closures, construction notices, and local safety resources for Cassia County.

Official ITD traveler information

Idaho Travel Conditions

Idaho 511

Use the official Idaho 511 map for current road conditions, closures, traffic events, construction, cameras, weather stations, restrictions, and mountain-pass information near Cassia County.

Official Idaho 511 WZDx work-zone alerts are shown in Road Alerts below. Broader Idaho 511 road conditions, cameras, passes, traffic events, and advisories will be added after the pending developer key is issued.

Road conditions

Road Alerts

5 active
Construction Medium priority Source: Idaho 511 WZDx Work Zones

Work zone: SH-27 northbound

Official Idaho 511 work zone on SH-27 northbound near I-84 in Cassia County. Alternating one-way traffic.

Road construction on SH-27 Northbound near I-84. Lanes Alternating. 4/29/2024 3:49 PM to 12/26/2026 5:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day

Traffic impact: Alternating one-way traffic.

WZDx schedule: Apr 29, 2024 2:49 PM PDT through Dec 26, 2026 4:00 PM PST.

Reported lanes: 2 alternating flow.

The WZDx record reports workers present in the work zone.

Official source: Idaho 511 WZDx. Confirm current conditions on Idaho 511 before travel.
View source on Idaho 511 WZDx Work Zones
Construction Medium priority Source: Idaho 511 WZDx Work Zones

Work zone: SH-27 northbound

Official Idaho 511 work zone on SH-27 northbound near US-30 to Snake River in Cassia County. Some lanes closed.

Road construction on SH-27 Both Directions from US-30 to Snake River. 1 Right lane closed. 4/20/2026 6:00 AM to 9/30/2026 9:00 PM Mon, Tue, Wed, Thu, Fri: 6:00 AM - 9:00 PM, Sat, Sun: Paused all day Activities: Consider Alternative Route, Look Out for Flagger, Reduced to Single Lane, Alternating Direction of Travel, Use Caution.

Traffic impact: Some lanes closed.

WZDx schedule: Sep 1, 2026 5:00 AM PDT through Sep 15, 2026 7:59 PM PDT.

Reported lanes: 1 open, 1 closed.

The WZDx record reports workers present in the work zone.

Official source: Idaho 511 WZDx. Confirm current conditions on Idaho 511 before travel.
View source on Idaho 511 WZDx Work Zones
Construction Medium priority Source: Idaho 511 WZDx Work Zones

Work zone: SH-27 southbound

Official Idaho 511 work zone on SH-27 southbound near US-30 to Snake River in Cassia County. Some lanes closed.

Road construction on SH-27 Both Directions from US-30 to Snake River. 1 Right lane closed. 4/20/2026 6:00 AM to 9/30/2026 9:00 PM Mon, Tue, Wed, Thu, Fri: 6:00 AM - 9:00 PM, Sat, Sun: Paused all day Activities: Consider Alternative Route, Look Out for Flagger, Reduced to Single Lane, Alternating Direction of Travel, Use Caution.

Traffic impact: Some lanes closed.

WZDx schedule: Sep 1, 2026 5:00 AM PDT through Sep 15, 2026 7:59 PM PDT.

Reported lanes: 1 open, 1 closed.

The WZDx record reports workers present in the work zone.

Official source: Idaho 511 WZDx. Confirm current conditions on Idaho 511 before travel.
View source on Idaho 511 WZDx Work Zones
Construction Low priority Source: Idaho 511 WZDx Work Zones

Work zone: N Yale Rd northbound

Official Idaho 511 work zone on N Yale Rd northbound near Lane Gulch Rd to E 400 N in Cassia County. Traffic impact not specified.

New road layout on N Yale Rd Both Directions from Lane Gulch Rd to E 400 N. Lane Affected. 5/18/2026 7:00 AM MT to 10/20/2026 7:00 PM MT Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Activities: Mandatory Speed Limit in Force.

Traffic impact: Traffic impact not specified.

WZDx schedule: May 18, 2026 6:00 AM PDT through Oct 20, 2026 6:00 PM PDT.

Official source: Idaho 511 WZDx. Confirm current conditions on Idaho 511 before travel.
View source on Idaho 511 WZDx Work Zones
Construction Low priority Source: Idaho 511 WZDx Work Zones

Work zone: I-84-BL

Official Idaho 511 work zone on I-84-BL near SH-81 Eastbound to Snake River in Cassia County. All lanes remain open.

Road construction on I-84-BL Both Directions from SH-81 Eastbound to Snake River. 9/2/2025 7:00 AM to 10/17/2026 6:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 11ft Speed Restriction: 35mph Activities: Expect Delays, Use Caution.

Traffic impact: All lanes remain open.

WZDx schedule: Sep 2, 2025 6:00 AM PDT through Oct 17, 2026 5:00 PM PDT.

Restrictions: Reduced Width: 11 feet.

Reported lanes: 2 open.

Official source: Idaho 511 WZDx. Confirm current conditions on Idaho 511 before travel.
View source on Idaho 511 WZDx Work Zones
Weather alerts

Weather Alerts / Red Flag Warnings

0 active

No active weather alerts

No active weather alerts or Red Flag warnings have been posted for this county.

Public health

Health Dept Alerts

2 active
Health Dept alert High priority Source: Idaho Department of Health and Welfare Public Health Notices

Statewide Idaho Alert: Idaho Public Health officials are investigating two outbreaks likely associated with raw milk

This is a State Wide Alert for Idaho. Idaho Department of Health and Welfare posted an official public health notice on Jun 3, 2026: Idaho Public Health officials are investigating two outbreaks likely associated with raw milk

This notice is displayed on every Idaho county page because it applies statewide. It does not mean the source identified a county-specific case, exposure, closure, or local outbreak in this county.

The Department of Health and Welfare (DHW) is working with local and state partners to investigate a recent increase in illnesses after consumption of unpasteurized (raw) milk. Since May 19, 2026, nearly 60 people have been identified who became ill after consuming raw milk.
View source on Idaho Department of Health and Welfare Public Health Notices
Health Dept alert High priority Source: Idaho Department of Health and Welfare Public Health Notices

Statewide Idaho Alert: Health advisories issued for Grasmere Reservoir and Bruneau Arm of CJ Strike

This is a State Wide Alert for Idaho. Idaho Department of Health and Welfare posted an official public health notice on Aug 21, 2026: Health advisories issued for Grasmere Reservoir and Bruneau Arm of CJ Strike

This notice is displayed on every Idaho county page because it applies statewide. It does not mean the source identified a county-specific case, exposure, closure, or local outbreak in this county.

The Department of Health and Welfare (DHW) is issuing health advisories for Grasmere Reservoir and the Bruneau Arm of CJ Strike, urging caution when recreating in or near the water. Grasmere Reservoir is about 35 miles south of Bruneau on State Highway 51.
View source on Idaho Department of Health and Welfare Public Health Notices
Fire & public safety

Fire & Safety Alerts

0 posted

No fire or safety alerts

No fire or public safety alerts have been posted for this county.

Wildlife safety

Wildlife Safety Alerts

0 posted

No wildlife safety alerts

No official cougar, bear, wolf, or other dangerous wildlife alerts have been posted for Cassia County.

For an immediate threat, call 911 or the nearest sheriff's office. For non-emergency wildlife conflicts, contact the nearest Idaho Fish and Game regional office.

Idaho Fish and Game wildlife safety news and alerts Report a wildlife conflict to Idaho Fish and Game Find an Idaho Fish and Game regional office Idaho wildlife management area access and closures Idaho wildlife reporting guidance
Local links

Resources

46 links