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Travel information for US Highway 20 is as follows:
| Frequently Asked Questions |
Closures & Advisories Search Conditions By Map Search By City Search By District 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. |
| District 5 (Northwest) | mm 124 on us 191 8-10 30 foot secton of fence |
| Conditions | |||||||
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| Route | Location | Conditions | Advisories | Restrictions | Last Report Time | Cameras | Sensors |
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Cody
NWS Forecast |
Between Pahaska and the Shoshone National Forest Boundary | Dry | Falling Rock | None | Jun 8, 2026, 06:32 PM | ||
| Between the Shoshone National Forest Boundary and Cody | Dry | Falling Rock | None | Jun 8, 2026, 06:32 PM |
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| Between Cody and the Big Horn County Line | Dry | None | None | Jun 8, 2026, 06:32 PM |
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Basin
NWS Forecast |
Between the Big Horn County Line and 4 miles west of Greybull | Dry | None | None | Jun 8, 2026, 06:32 PM |
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| Between 4 miles west of Greybull and Greybull | Dry | None | None | Jun 8, 2026, 06:32 PM |
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| Between Greybull and Basin | Dry | None | None | Jun 8, 2026, 06:32 PM |
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| Between Basin and MM 176, Washakie/Big Horn County Line | Dry | None | None | Jun 8, 2026, 06:32 PM |
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Worland
NWS Forecast |
Between Washakie/Big Horn County Line and Worland | Dry | None | None | Jun 8, 2026, 06:32 PM |
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| Between Worland and Mile Marker 148, Washakie/Hot Springs County Line | Dry | None | None | Jun 8, 2026, 06:32 PM |
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Thermopolis
NWS Forecast |
Between Mile Marker 148, Washakie/Hot Springs County Line and Thermopolis | Dry | None | None | Jun 8, 2026, 06:32 PM |
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| 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 |
Jun 8, 2026, 06:32 PM |
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Shoshoni
NWS Forecast |
Between Boysen Dam and Shoshoni | Dry | None | None | Jun 8, 2026, 06:32 PM |
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| Between Shoshoni and Moneta | Dry | None | None | Jun 8, 2026, 06:32 PM |
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| Between Moneta and Waltman | Dry | None | None | Jun 8, 2026, 06:32 PM |
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Casper
NWS Forecast |
Between Waltman and Casper | Dry | None | None | Jun 8, 2026, 07:36 PM |
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| Between Casper and Glenrock | Dry | None | None | Jun 8, 2026, 07:36 PM |
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Douglas
NWS Forecast |
Between Glenrock and Douglas | Dry | None | None | Jun 8, 2026, 07:36 PM |
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| Between Douglas and I-25, Orin Jct | Dry | None | None | Jun 8, 2026, 07:36 PM |
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| Between I-25, Orin Jct and Lost Springs | Dry | None | None | Jun 8, 2026, 07:36 PM | |||
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Lusk
NWS Forecast |
Between Lost Springs and Lusk | Dry | None | None | Jun 8, 2026, 07:36 PM |
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| Between Lusk and the Nebraska State Line | Dry | None | None | Jun 8, 2026, 07:36 PM |
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| Construction Projects | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Project Name | Project Number | WYDOT Contact | Contractor Contact | Start Date | Completion Date | Description | Road | Milepost(s) | Surface | Delays | Last Updated |
| Road work near Casper I-25 mm 186-188 | Road Work | Tim Rasnake 307-322-6500 |
None | Apr 17, 2026 | Jun 30, 2028 | Reconstruction (1 bridge, and 5 overhead sign structures), bridge replacement (2 structures),replace water and sewer mains, and enhancements; Involving placing concrete pavement, installing median barrier, placing road base, installing shoulder barrier, applying pavement markings, erecting structural steel, placing MSE wall, excavation, replacing overhead sign structures, removing concrete pavement, placing structural concrete, and installing traffic signal system on I-25 beginning at RM 187.99 at the Casper Marginal (McKinley - Yellowstone Section) for approximately 2.0 miles in Natrona County.______________________ | I25 US20 US87 US26 |
187 to 189 | Paved | Construction zone speed limit 45 MPH | Apr 22, 2026, 07:33 PM |
| Yellowstone National Park - Cody, Palisades Section | N311107 | None | Mountain Construction Company Lovell , WY 307-548-7186 |
May 1, 2026 | Oct 31, 2026 | Overlay and Chip Seal with slope flattening, guardrail repair and drainage work on approximately 9.85 miles on US 14/16/20 beginning at RM 10.249 and ending at RM 20.102. | US20 17THST GREYBULLHWY SHERIDANAVE US14 US16 YELLOWSTONEHWY WY120 8THST |
10.25 to 20.1 | Paved | 20 minute delays with stopped conditions | May 4, 2026, 11:11 AM |
| Road Work WY 14/16/20 WY 310 MP 205.29 - 211.65 | Maintenance Operations: Chip Seal | None | None | Jun 8, 2026 | Jun 15, 2026 | Chip seal | WYELLOWSTONEHWY 6THST MAINST BIGHORNAVE S6THST N10THST E2NDST US26BUS W1STST US87 WY789 I25BUS US20 N6THST US14 3RDSTE US87BUS SHOSHONIST IDAHOST US310 4THST US20BUS US26 PARKST ASHST US16 E1STST US14A |
205.29 to 211.65 | Paved | 15 minute delays | May 28, 2026, 07:46 AM |
| Waltman - Shoshoni | B265002 | Erik Smith 307-332-4151 erik.smith@wyo.gov |
McGarvin-Moberly Construction Co. Worland , WY 307-347-4268 |
May 25, 2026 | Jul 31, 2026 | Asphalt paving overlay and chip seal on 47 miles of US 20/26 | US20 US20BUS |
50.59 to 97.5 | Paved | 15 minute delays with stopped conditions | Jun 8, 2026, 04:09 PM |
| *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. |
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