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Travel information for Wyoming Highway 321 is as follows:

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Variable Speed Limits
Chain Law
Neighboring States

District Comments
District 2 (Central) I25: Planned Closure for roadwork June 9-12, 2026 from 8pm to 6am, all lanes will be closed near Casper from milepost 180 to 196.



Conditions
Route Location Conditions Advisories Restrictions Last Report Time Cameras Sensors
Chugwater
NWS Forecast
Between Chugwater and I-25 Wet with Rain, Dangerous Winds Extreme Blow Over Risk None Jun 8, 2026, 04:48 PM    

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.