List of Interstate Highways in Wyoming
Highway names | |
---|---|
Interstates | Interstate X (I-X) |
Business routes: | Interstate X Business (I-X Bus.) |
System links | |
|
The Interstate Highways in Wyoming are the segments of the
Business Interstate Highways. Construction began in September 1956 on Interstate 25 (I-25) and the network was completed in October 1985.[1] It cost an estimated $570 million to build Wyoming's portion of the Interstate Highway System.[2]
Mainline highways
Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
---|---|---|---|---|---|---|---|---|
I-25
|
300.53 | 483.66 | 1956 | current | Runs concurrently with US 87 almost entirely in the state
| |||
I-80
|
402.78 | 648.21 | US 189 at the Utah state line towards Salt Lake City |
I-80 at the Nebraska state line towards Ogallala | 1956 | current | Longest interstate in Wyoming; also known as the Lincoln Highway | |
I-90
|
208.80 | 336.03 | I-90 / US 87 at the Montana state line towards Billings | I-90 / US 14 at the South Dakota state line towards Rapid City | 1956 | current | Only Interstate that does not serve Cheyenne | |
I-180 | 1.09 | 1.75 | I-80 in Cheyenne | 1984 | current | Highway not up to US 85 , and US 87 Business in its entire length; also the only auxiliary route in Wyoming
| ||
Business routes
Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
---|---|---|---|---|---|---|---|---|
I-25 BL
|
8.006 | 12.884 | US 87 in Cheyenne |
I-25/US 87 in Cheyenne | — | — | Runs entirely concurrently with US 87 Business; also runs concurrently with US 85 entering Cheyenne
| |
I-25 BL
|
3.28 | 5.28 | I-25/US 87 and WYO 211 in Chugwater | I-25/US 87 and WYO 321 northeast of Chugwater | — | — | Entirely concurrent with WYO 313 and WYO 321 | |
I-25 BL
|
4.966 | 7.992 | I-25/US 87 in Douglas | I-25/US 87 southeast of Douglas | — | — | Entirely concurrent with US 20 Business, US 26 Business, and US 87 Business | |
I-25 BL
|
6.98 | 11.23 | I-25/US 87 southwest of Glenrock | I-25/ US 26 /US 87 southeast of Glenrock
|
— | — | Runs concurrently with County Road 19 entering Glenrock and then US 20 and US 26 heading east of Glenrock | |
I-25 BL
|
2.180 | 3.508 | I-25/US 87 in Casper | I-25/US 20/US 26/US 87 east of Casper | — | — | Unsigned; entirely concurrent with US 87 Business; also runs concurrently with unsigned WYO 255, US 20, and US 26 | |
I-25 BL
|
1.673 | 2.692 | I-25/US 87 south of Buffalo | I-90/US 87 north of Buffalo | — | — | Entirely concurrent with US 87 Business; also runs concurrently with I-90 Business and WYO 196 | |
I-80 BL
|
3.150 | 5.069 | US 189 west of Evanston |
I-80/US 189 east of Evanston | — | — | Entirely concurrent with US 189 Business; also runs concurrently with WYO 89 | |
I-80 BL | 15.630 | 25.154 | I-80 west of Fort Bridger | I-80 east of Lyman | — | — | Longest Interstate business route in Wyoming; also the only business route in Wyoming not concurrent with another route | |
I-80 BL
|
2.5 | 4.0 | I-80/US 30 northwest of Green River | I-80/US 30 east of Green River | — | — | Entirely concurrent with US 30 Business; also runs concurrently with WYO 374 | |
I-80 BL
|
4.120 | 6.630 | I-80/US 30/ US 191 west of Rock Springs |
I-80/US 30 northeast of Rock Springs | — | — | Entirely concurrent with US 30 Business | |
I-80 BL
|
3.770 | 6.067 | I-80/US 30 west of Rawlins | I-80/US 30/ US 287
|
— | — | Entirely concurrent with US 30 Business; also runs concurrently with US 287 | |
I-80 BL
|
6.357 | 10.231 | I-80 in Laramie | I-80/US 30 east of Laramie | — | — | Runs concurrently with US 30, US 287, and County Road 322 north of Laramie | |
I-80 BL
|
6.935 | 11.161 | I-80 west of Cheyenne | I-80/US 30 east of Cheyenne | — | — | Entirely concurrent with US 30 | |
I-90 BL
|
5.4 | 8.7 | I-90/US 14/US 87 north of Sheridan | I-90 southeast of Sheridan | — | — | Entirely concurrent with US 14; also runs concurrently with US 87 | |
I-90 BL
|
2.2 | 3.5 | I-90/US 87 north of Buffalo | I-90 east of Buffalo | — | — | Runs concurrently with US 16
| |
I-90 BL
|
3.3 | 5.3 | I-90 west of Gillette | I-90/US 14/US 16 east of Gillette | — | — | Runs concurrently with US 14 and US 16 almost in its entire length; also runs concurrently with WYO 50 and WYO 59 | |
I-90 BL
|
1.6 | 2.6 | I-90 northwest of Moorcroft | I-90 in Moorcroft | — | — | Unsigned; runs concurrently with US 14 and US 16 entering Moorcroft | |
I-90 BL
|
3.4 | 5.5 | I-90 southwest of Sundance | I-90 east of Sundance | — | — | Entirely concurrent with US 14 | |
See also
- U.S. Roads portal
References
- ^ Waggener, John (June 21, 2021). "65 Years Ago: Ellis Armstrong and America's Interstate Highway System". American Heritage Center. Retrieved November 13, 2022.
- Newspapers.com.
External links
- Media related to Interstate Highways in Wyoming at Wikimedia Commons