State Route 432 is a spur route

Spur route

A spur route is a short road forming a branch from a longer, more important route . A bypass or beltway is never considered a true spur route as it typically reconnects with the major road...

 of SR 4

State Route 4 (Washington)

State Route 4, also known as the Ocean Beach Highway, connects U.S. Route 101 at Johnson's Landing, Washington with Interstate 5 in Kelso-Longview. It runs along the north bank of the Columbia River and serves as Washington's counterpart to U.S. Route 30 in Oregon...

 beginning west of the cities of Kelso

Kelso, Washington

Kelso is a city in southwest Washington State, United States, and is the county seat of Cowlitz County. At the 2010 census, the population was 11,925. Kelso is part of the Longview, Washington Metropolitan Statistical Area, which has a population of 102,410. Kelso shares its long western border...

 and Longview

Longview, Washington

Longview is a city in Cowlitz County, Washington, United States. It is the principal city of the "Longview, Washington Metropolitan Statistical Area", which encompasses all of Cowlitz County. Longview's population was 36,648 at the time of the 2010 census and is the largest city in Cowlitz County...

, Washington. Beginning at SR 4, SR 432 travels east on Mt Solo Road. As it enters the industrial area of Longview, the road changes to Industrial Way. After the junction of SR 433 and Lewis and Clark Bridge access, SR 432 turns north to an interchange

Interchange (road)

In the field of road transport, an interchange is a road junction that typically uses grade separation, and one or more ramps, to permit traffic on at least one highway to pass through the junction without directly crossing any other traffic stream. It differs from a standard intersection, at which...

 with Tennant Way. SR 432 enters Tennant Way, which becomes a freeway eastbound for the last four miles (6 km) to a large interchange with Interstate 5. The SR 432 and Interstate 5 interchange is known by many as the Longview Wye.

History

Until 1992, SR 432 began in Longview where Nichols Blvd junctioned SR 4. Nichols Blvd is a 2 lane city street

Street

A street is a paved public thoroughfare in a built environment. It is a public parcel of land adjoining buildings in an urban context, on which people may freely assemble, interact, and move about. A street can be as simple as a level patch of dirt, but is more often paved with a hard, durable...

, which travels southeasterly into downtown

Downtown

Downtown is a term primarily used in North America by English speakers to refer to a city's core or central business district ....

 Longview. Nichols Blvd becomes Tennant Way and widens to four lanes after crossing 15th Ave/Oregon Way. SR 432 then had its current routing from the interchange with Industrial Way and SR 411 to its eastern terminus at Interstate 5.

SR 432 also was formerly a spur route of US 830 when it was in commission. It was known then as SR 832. SR 433 was also known as SR 833. When US 830 was dropped from the US highway system, SR 14

State Route 14 (Washington)

State Route 14, also called the Lewis and Clark Highway, is a state highway in Washington. It extends for approximately from a junction with Interstate 5 in Vancouver in the west, to a junction with Interstate 82 and U.S...

 was commissioned east of Interstate 5, and SR 4 was incarnated west of Interstate 5. The SR 432 and SR 433 were also changed at that time.

Major intersections

The entire route is in Cowlitz County.

Location	Mile	Destinations	Notes
	0.00
Longview	6.10		SR 433 Washington State Route 433 State Route 433 is a long state highway located entirely in Cowlitz County, Washington, United States. The highway begins midway across the Columbia River on the National Register of Historic Places listed Lewis and Clark Bridge and travels north to SR 432 in Longview. Prior to the 1964 state...
	7.62		Interchange
	West end of freeway
	9.57	Dike Road
Kelso	9.88	Talley Way – Kelso Industrial Area
	10.32	, Portland
	10.32	Carrolls	Continuation beyond I-5