Washington State Route 155

State Route 155 is a state highway in the U.S. state of Washington, running from U.S. Route 2 in Fordair over Disautel Pass to U.S. Route 97 and State Route 20 in the city of Omak. It is the main north–south route through the area around Grand Coulee Dam.

State Route 155
A map of SR 155's area with the highway highlighted in red.
Route information
Auxiliary route of US 97
Defined by RCW 47.17.300
Maintained by WSDOT
Length80.47 mi[1] (129.50 km)
Existed1964–present
Major junctions
South end US 2 in Fordair
  SR 174 in Grand Coulee

SR 155 Spur in Omak
North end US 97 / SR 20 in Omak
Highway system
← SR 153→ SR 160
Washington State Route 155 through Grand Coulee, WA

Route description

State Route 155 begins at an intersection with U.S. Route 2 in Fordair, just northeast of Coulee City. From there, the highway heads north, paralleling the shore of Banks Lake for much of the southern part of the route. After passing Steamboat Rock State Park, it crosses over Osborn Bay Lake before passing through Electric City. It then intersects State Route 174 in Grand Coulee.[2] The highway then heads northeast, crossing the Columbia River just north of the Grand Coulee Dam.[3]

On the north side of the Columbia, State Route 155 turns west and traverses the Colville Indian Reservation, passing through the communities of Nespelem and Disautel, crossing Disautel Pass at an elevation of 3,252 feet (991 m).[3] As the highway descends from the pass, it approaches the town of Omak on Omak Avenue. On the east side of the town, it crosses under the two-lane carriageway of U.S. Route 97 and State Route 20. Since there is no access immediately at this underpass, State Route 155 continues three blocks west before turning south along Dayton Street to access U.S. Route 97.[1][4]

At the intersection of Omak Avenue and Dayton Street, a spur route of State Route 155 begins and continues west along Omak Avenue to terminate at State Route 215 in downtown Omak. This was the original alignment of State Route 155 before U.S. Route 97 was realigned onto its current bypass. State Route 155 Spur is 0.37 miles (0.60 km) long.[1]

History

When State Route 155 was first established in 1964, U.S. Route 97 passed through downtown Omak and Okanogan on what is now State Route 215, rather than on its easterly bypass as it does today. Thus, State Route 155 continued west on what is now State Route 155 Spur to terminate at U.S. Route 97 in downtown Omak. When the US 97 bypass was built a few years later, State Route 155 was rerouted onto its current alignment.[5]

Prior to the 1964 highway renumbering, the section of State Route 155 from Coulee City to the Grand Coulee Dam was numbered Secondary State Highway 2F. From Grand Coulee to Omak, it was numbered Secondary State Highway 10F.[5]

Major intersections
CountyLocationmikmDestinationsNotes
Grant​0.000.00 US 2 – Wenatchee, SpokaneSouthern terminus
​15.5525.03Steamboat Rock State Park
Grand Coulee25.7141.38 SR 174
Okanogan​57.6092.70Disautel Summit
Omak80.15128.99
SR 155 Spur to SR 215 – Omak		Former SR 155
80.47129.50 US 97 / SR 20 – Okanogan, TonasketNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

KML is from Wikidata
  1. Washington State Department of Transportation. "State Highway Log, 2006" (PDF). Retrieved April 22, 2007.
  2. The Thomas Guide Pacific Northwest Road Atlas (Map) (7th ed.). Rand McNally. 2006. p. 237. § B4, B5, C3. ISBN 0-528-85869-6.
  3. The Road Atlas (Map). Rand McNally. 2010. p. 109. § C14, E15. ISBN 0-528-94248-4.
  4. Google (October 30, 2015). "Omak, WA" (Map). Google Maps. Google. Retrieved October 30, 2015.
  5. "State Route 155". Highways of Washington State. Retrieved April 30, 2009.
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