Washington 155
Washington 155
| Termini | US-97 near Omak to US-2 near Coulee City |
| Length | 78.4 miles |
| "Where does it go?" | From the Omak area to Coulee City, via the Colville Indian Reservation and Nespelem, near the Grand Coulee Dam, and down the east bank of Banks Lake. |
| SB Miles | Southbound down | Northbound up | NB Miles | Google™ | Multiplex | Near City or Town |
County |
| 0.0 |
 |
78.4 |
  |
Dayton Ave | Omak | Okanogan | |
| 0.3 |
 Omak Ave |
78.1 |
|
Dayton Ave Omak Ave |
|||
| 13.8 | Omak Lookout Mountain Rd | 64.6 |
|
Nespelem | |||
| 22.6 | Disautel Summit - 3252 feet | 55.8 |
|
||||
| 35.8 | Nespelem Access Rd | 42.6 |
|
||||
| 49.1 | Park St | 29.3 |
|
Elmer City | |||
| 51.5 | Aspen St | 26.9 |
|
River Dr | Coulee Dam | ||
| 51.8 | Columbia River bridge | 26.6 |
|
Douglas | |||
| 53.0 | Coulee Dam access route | 25.4 |
|
Grand Coulee | Grant | ||
| 52.7 |
 Bridgeport Hwy W Grand Coulee Ave |
25.7 |
|
Midway St | |||
| 54.0 | Electric Blvd | 24.4 |
|
Coulee Blvd | Electric City | ||
| 62.8 | Steamboat Rock State Park | 15.6 |
|
||||
| 78.4 |
 |
0.0 |
|
Coulee City | |||
Highways of
Washington State - State Route 155
Washington State Highways -
SR-155
Washington
State Legislation - Route 155