U.S. 20 Junction List

Most of the information contained herein is derived from the Wyoming Department of Transportation 1997 Wyoming Reference Marker System. That guide lists highways by their state inventory control number. Since these inventory numbers are not featured on the highways, this list is designed to provide mileposting information for individual, signed highways.

The following table lists all of the major towns, geographical features, highway junctions, and points of interests along the route. Each of the signed routes (including multiplexes) are shown in the first column for each entry. The second column shows the actual milepost marker as found on the highway; note that the mileposts rarely reset at zero at the start of new highways. In the third column is the description of the town or geographical feature. "CL" refers to "City" or "Corporate" Limits. The fourth column lists the state control inventory route, and the fifth column provides the distance between each geographical feature. If there are multiple features that require several lines to explain, then the distance in this column would be zero. Finally, the last column shows the cumulative mileage of the route. The last, bold-faced number in the column provides the total mileage for the signed route.

Signed Route Milepost Number Description State Control Route Distance Overall Mileage

0.00 Yellowstone National Park East Boundary 31 0.00 0.00
0.00 Shoshone National Forest West Boundary 31 0.00 0.00
0.00

Begin

Resume

31 0.00 0.00
2.26 North Fork Shoshone River 31 2.26 2.26
20.31 Shoshone River 31 18.05 20.31
22.05 Elk's Fork River 31 1.74 22.05
27.47 Shoshone National Forest Boundary 31 5.42 27.47
32.01 North Fork Shoshone River 31 4.54 32.01
41.69 41.69BK=41.73AH 31 9.68 41.69
44.82 44.82BK=45.06AH 31 3.09 44.78
45.37 Tunnel 31 0.31 45.09
45.78 Tunnel 31 0.41 45.50
45.85 Tunnel 31 0.07 45.57
46.69 Shoshone River 31 0.84 46.41
48.99 WCL Cody 31 2.30 48.71
49.87 Junction Southwest 31 0.88 49.59

52.36

Junction

 31 2.49 52.08
52.95 SCL Cody 31 0.59 52.67
53.73 Beck Lake 31 0.78 53.45

54.58 Junction South 31 0.85 54.30
55.12 CL Cody 31 0.54 54.84
55.20 ECL Cody 31 0.08 54.92
60.90 60.90BK=61.04AH 31 5.70 60.62
77.74 Park-Bighorn County Line 31 16.70 77.32
85.66 Junction 31 7.92 85.24
86.26 Junction 31 0.60 85.84
93.35 93.35BK=93.45AH 31 7.09 92.93

100.75/209.03

Junction


-
North

 31/34 7.40 100.33
206.70 Airport Rest Area 34 2.33 102.66
205.51 Burlington Northern RR Grade Separation 34 1.19 103.85
205.06 NCL Greybull 34 0.45 104.30

204.05

Junction/Routes Divide:

and

South

 34 0.00 105.31
203.63 SCL Greybull 34 0.42 105.73
203.57 Burlington Northern RR Grade Separation 34 0.06 105.79
199.27 Junction West 34 4.30 110.09
197.30 NCL Basin 34 1.97 112.06
196.42 Junction West 34 0.88 112.94
195.74 SCL Basin 34 0.68 113.62
185.86 185.86BK=186.31AH 34 9.88 123.50
185.52 Junction South 34 0.79 124.29
185.04 WCL Manderson 34 0.48 124.77
184.35 Junction East 34 0.69 125.46
184.20 ECL Manderson 34 0.15 125.61
176.69 Big Horn-Washakie County Line 34 7.51 133.12
168.82 Slick Creek 34 7.87 140.99
166.59 NCL Worland 34 2.23 143.22
165.70 Junction East; Worland 34 0.89 144.11
165.38 Junction South 34 0.32 144.43
165.36 Railroad At-Grade Crossing 34 0.02 144.45
165.00 Big Horn River 34 0.36 144.81
164.80 WCL Worland 34 0.20 145.01
164.72 Junction North 34 0.08 145.09
164.58 164.58BK=164.68AH 34 0.14 145.23
162.10 162.10BK=162.12AH 34 2.58 147.81
156.53 Junction West and East 34 5.59 153.40
147.91 Washakie-Hot Springs County Line 34 8.62 162.02
144.59 Junction East 34 3.32 165.34
139.80 Junction East 34 4.79 170.13
136.34 136.34BK=136.33AH 34 3.46 173.59
134.10 Hot Springs State Park Boundary and NCL Thermopolis 34 2.23 175.82
132.98 Hot Springs State Park Boundary 34 1.12 176.94
132.53 Junction North 34 0.45 177.39
131.50 SCL Thermopolis 34 1.03 178.42
129.88 Junction East 34 1.62 180.04
128.47 Burlington Northern Railroad Separation 34 1.41 181.45
128.32 Big Horn River 34 0.15 181.60
127.39 Wind River Indian Reservation Boundary 34 0.93 182.53
117.28 Hot Springs-Fremont County Line 34 10.11 192.64
116.39 Tunnel Number Three 34 0.89 193.53
116.29 Tunnel Number Two 34 0.10 193.63
116.17 Tunnel Number One 34 0.12 193.75
115.57 Wind River Indian Reservation Boundary 34 0.60 194.35
108.82 108.82BK=108.90AH 34 6.75 201.10
102.88 Burlington Northern Railroad Separation 34 6.02 207.12
100.47 NCL Shoshoni 34 2.41 209.53
100.41 100.41BK=100.42AH 34 0.06 209.59
100.04

Junction/Routes Divide:

 34 0.38 209.97
99.53 ECL Shoshoni 34 0.51 210.48
99.40 Railroad at grade crossing 34 0.13 210.61
92.91 92.91BK=93.05AH 34 6.49 217.10
79.27 Moneta 34 13.78 230.88
68.35 Fremont-Natrona County Line 34 10.92 241.80
59.50 Hiland 34 8.85 250.65
53.21 Waltman Rest Area 34 6.29 256.94
50.69 Waltman 34 2.52 259.46
45.16 Hell's Half Acre 34 5.53 264.99
39.61 Powder River 34 5.55 270.54
30.46 Natrona 34 9.15 279.69
10.37 10.37BK=10.36AH 34 20.09 299.78
6.05/0.00

Junction Casper Bypass / Business Split

Future Junction Casper West Beltline

 34/34 Spur 4.31 304.09
0.00

Use into downtown Casper.

Use to bypass downtown and connect to ; brief freeway segment ahead

 34 Spur 0.00 304.09
0.15 0.15BK=0.17AH 34 Spur 0.15 304.24
0.19

Junction

Old Yellowstone Highway Separation

 34 Spur 0.02 304.26
0.35 Burlington Northern Railroad Separation 34 Spur 0.16 304.42
0.99 Burlington Northern Railroad Separation 34 Spur 0.64 305.06
2.09 Junction 34 Spur 1.10 306.16
2.90

Junction

(MP 189.51)

 34 Spur 0.81 306.97
2.90

End/Begin

 34 Spur 0.00 306.97

2.90/189.51

Westbound Travelers: For Bypass

Follow

South

 34 Spur/I-25 0.00 306.97
189.51 follow from MP 189.51 to 186.45 I-25 0.00 306.97

186.45/187.99

Junction North

 

leave

I-25/505 0.06 307.03
187.89 Yellowstone Street Separation 505 0.10 307.13
187.25 WCL Evansville and ECL Casper; End Divided Section 505 0.64 307.77
186.99 Begin Divided Section 505 0.26 308.03
186.88 Junction Casper Beltline South 505 0.11 308.14
186.82 End Four Lane 505 0.06 308.20
186.75 ECL Evansville 505 0.07 308.27
184.06 Junction South North 505 2.69 310.96
183.90 Begin Four Lane 505 0.16 311.12
181.15 Railroad at-grade crossing 505 2.75 313.87
176.39 Natrona-Converse County Line 505 4.76 318.63

166.35 Junction North 505 10.04 328.67
166.22 WCL Glenrock 505 0.13 328.80
166.07 End Divided Section 505 0.15 328.95
165.70 Junction North and South 505 0.37 329.32
165.54 Begin Divided Section 505 0.16 329.48
163.63 ECL Glenrock 505 1.91 331.39
162.05 Junction South 505 1.58 332.97
160.87 Junction (MP 160.87); End 505 1.18 334.15
160.87/160.87 rejoin at Exit 160 505/I-25 0.00 334.15
160.87 follows from MP 160.87 to MP 126.47 I-25 0.00 334.15
140.10 Junction Bus (W Douglas) I-25 20.77 354.92
135.47 Junction Bus (E Douglas) I-25 4.63 359.55
126.47/0.00 Junction (MP 126.47) I-25/40 9.00 368.55
0.00 Orin Junction Rest Area 40 0.00 368.55
0.44 0.44BK=0.46AH 40 0.44 368.99
0.96 Chicago and Northwestern Railroad Separation 40 0.50 369.49
1.62 Burlington and Northern Railroad Separation 40 0.66 370.15
1.84 Junction South 40 0.22 370.37
2.95 2.95BK=2.00AH 40 1.11 371.48
15.59 WCL Lost Springs 40 13.59 385.07
15.73 ECL Lost Springs 40 0.14 385.21
17.39 Niobrara-Converse County Line 40 1.66 386.87
31.78 Junction 40 14.39 401.26
39.59 Junction North 40 7.81 409.07
40.60 Lusk Rest Area 40 1.01 410.08
40.79 Lusk Port of Entry 40 0.19 410.27

40.88 Junction South; Lusk 40 0.09 410.36
40.88 State Control Route 40 and 25 overlap MP 40.88-41.39 40/25 0.00 410.36
41.39 Junction East and North 40 0.51 410.87
41.72 Niobrara River 40 0.33 411.20
41.89 ECL Lusk 40 0.17 411.37
55.69 South Fork Niobrara River 40 13.80 425.17
57.85 C&NW Railroad Separation 40 2.16 427.33
60.62 WCL Van Tassell 40 2.77 430.10
60.92 Niobrara River 40 0.30 430.40
61.17 Railroad At-Grade Crossing 40 0.25 430.65
61.89 ECL Van Tassell 40 0.72 431.37
63.24 Nebraska State Line; Continue 40 1.35 432.72
Casper
6.05

Junction

East

 34 0.00 0.00
6.05 Begin 34 0.00 0.00
4.64 WCL Mills 34 1.41 1.41
4.53 ECL Mills 34 0.11 1.52
4.52 Junction Casper Beltline South 34 0.01 1.53
4.10 Chicago and Northwestern Railroad Separation 34 0.42 1.95
3.93 Junction North 34 0.17 2.12
3.65 3.65BK=3.80AH 34 0.28 2.40
2.85 WCL Casper 34 0.80 3.20
2.34 Junction 34 0.51 3.71
2.09 North Platte River 34 0.25 3.96
2.04 Railroad at-grade crossing 34 0.05 4.01

1.70

Junction

 34 0.34 4.35
1.63 Junction South 34 0.07 4.42
0.69 Railroad at-grade crossing 34 0.94 5.36
0.11 0.11BK=0.10AH 34 0.58 5.94
0.11 ECL Casper 34 0.01 5.95
0.05 Junction
split off 0.05 of a mile before interchange		 34 0.06 6.01

End

140.44 Junction (MP 140.10) 58 0.00 0.00
140.44 Begin
58 0.00 0.00
140.08 Junction North and South 58 0.36 0.36
140.08 WCL Douglas 58 0.00 0.36
139.46 North Platte River 58 0.62 0.98
138.94 Begin Four Lane Section; At grade railroad crossing 58 0.52 1.50
138.76 End Four Lane Section 58 0.18 1.68
135.93 ECL Douglas 58 2.83 4.51
135.83 Begin Divided Section 58 0.10 4.61
135.47 Junction (MP 135.47) 58 0.36 4.97
135.47 End 58 0.00 4.97

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Page Updated June 8, 2012.

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