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Travel information for US Highway 20 is as follows:

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Variable Speed Limits
Chain Law
Neighboring States

District Comments
District 2 (Central)
District 5 (Northwest)


Conditions
Route Location Conditions Advisories Restrictions Last Report Time Cameras Sensors
Cody
NWS Forecast
Between Pahaska and the Shoshone National Forest Boundary Dry Falling Rock None Nov 7, 2025, 07:52 PM    
Between the Shoshone National Forest Boundary and Cody Wet Falling Rock None Nov 7, 2025, 07:52 PM    
Between Cody and the Big Horn County Line Wet None None Nov 7, 2025, 07:52 PM    
Basin
NWS Forecast
Between the Big Horn County Line and 4 miles west of Greybull Wet None None Nov 7, 2025, 07:52 PM    
Between 4 miles west of Greybull and Greybull Wet None None Nov 7, 2025, 07:52 PM    
Between Greybull and Basin Wet None None Nov 7, 2025, 07:52 PM    
Between Basin and MM 176, Washakie/Big Horn County Line Dry None None Nov 7, 2025, 07:52 PM    
Worland
NWS Forecast
Between Washakie/Big Horn County Line and Worland Dry None None Nov 7, 2025, 07:52 PM    
Between Worland and Mile Marker 148, Washakie/Hot Springs County Line Dry None None Nov 7, 2025, 07:52 PM    
Thermopolis
NWS Forecast
Between Mile Marker 148, Washakie/Hot Springs County Line and Thermopolis Dry None None Nov 7, 2025, 07:52 PM    
Between Thermopolis and Boysen Dam Dry Falling Rock US 20 BUS/WY 789 from milepost 116.100 to 116.500
Width restriction: 12 ft
Height restriction: 15 ft
Nov 7, 2025, 07:52 PM    
Shoshoni
NWS Forecast
Between Boysen Dam and Shoshoni Dry None None Nov 7, 2025, 07:52 PM    
Between Shoshoni and Moneta Dry None None Nov 7, 2025, 07:52 PM    
Between Moneta and Waltman Dry None None Nov 7, 2025, 07:52 PM    
Casper
NWS Forecast
Between Waltman and Casper Wet with Snowfall None None Nov 7, 2025, 09:14 PM    
Between Casper and Glenrock Dry None None Nov 7, 2025, 06:24 PM    
Douglas
NWS Forecast
Between Glenrock and Douglas Dry None None Nov 7, 2025, 06:24 PM    
Between Douglas and I-25, Orin Jct Dry None None Nov 7, 2025, 06:24 PM    
Between I-25, Orin Jct and Lost Springs Dry None None Nov 7, 2025, 06:24 PM    
Lusk
NWS Forecast
Between Lost Springs and Lusk Dry None None Nov 7, 2025, 06:24 PM    
Between Lusk and the Nebraska State Line Dry with Strong Winds None None Nov 7, 2025, 08:27 PM    

Construction Projects
Project Name Project Number WYDOT Contact Contractor Contact Start Date Completion Date Description Road Milepost(s) Surface Delays Last Updated
Yellowstone - Cody, WY 14/16/20 MP 43.86 - 44.78 N311103 Todd Frost
307-272-3341
todd.frost@wyo.gov
Wilson Bros. Construction, Inc.
Cowley , WY
307-548-6559
Feb 23, 2025 Dec 30, 2025 Erosion control and guardrail work on approximately 1 mile on US 14/16/20 beginning at RM 43.86 to RM 44.78 between Yellowstone and Cody. Expect up to 10 minute delays with stopped condition when the contractor is working. 43.860 to 44.780 Paved 10 minute delays Oct 2, 2025, 01:32 AM
Road Work North Railway Ave between US 20 and Russel Ave near Worland n/a None None Nov 2, 2025 Nov 9, 2025 Road Work North Railway Ave between US 20 and Russel Av near Worland , North Railway Ave will be closed at the intersection of Pulliam Ave for the duration of the work. Local traffic only is allowed through town. Truck Route is US 20 between Pulliam Ave and Russel Ave 165.300 to 165.400 Paved Closed Nov 4, 2025, 12:37 AM
*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.