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Travel information for US Highway 18 is as follows:

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Frequently Asked Questions Closures & Advisories
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Variable Speed Limits
Chain Law
Neighboring States

District Comments
District 2 (Central) WY487: The Shirley Rim Rest Area is closed until further notice near Shirley Basin at milepost 45.0.

US26: The Rest Area is closed until further notice near Guernsey at milepost 17.8.

District 4 (Northeast)


Conditions
Route Location Conditions Advisories Restrictions Last Report Time Cameras Sensors
Douglas
NWS Forecast
Between I-25, Orin Jct and Lost Springs Wet, Slick in Spots None None Apr 4, 2026, 07:51 AM    
Lusk
NWS Forecast
Between Lost Springs and Lusk Wet, Slick in Spots None None Apr 4, 2026, 08:36 AM   Lusk  
Between Lusk and Mule Creek Jct Wet, Slick in Spots None None Apr 4, 2026, 08:36 AM   Redbird Rd Mule Creek Junction  
Newcastle
NWS Forecast
Between Mule Creek Jct and the South Dakota State Line Wet None None Apr 3, 2026, 09:59 AM   Mule Creek Junction  

Construction Projects
Project Name Project Number WYDOT Contact Contractor Contact Start Date Completion Date Description Road Milepost(s) Surface Delays Last Updated

No active construction projects reported at this time.

*Chain Law - Level 1 Definition
**Chain Law - Level 2 Definition
Other Definitions

Impact Levels Description / Recommended Action
Low Minimal impacts expected, use general caution.
Moderate Some impacts expected, use extra caution. Stay alert for changing road and weather conditions.
High Dangerous impacts expected, use extreme caution, delay travel or consider alternate route. If travel is necessary, slow down and allow extra time.
CLOSED Per W.S. 24-1-109, motorists traveling on a closed road without permission from WYDOT or WHP may be subject to a fine of up to $750 and/or up to 30 days imprisonment.
Seasonal / Long-Duration Event Impact level used to distinguish long-duration events from emergent events.
All travelers are encouraged to check present conditions and forecasts before departing.