US Bridges

S-W Ramp over W-W Ramp

Good

Cowlitz County, Washington · JCT SR 432 · Structure no. 0017835A0000000

Built
2011
14 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
126 ft
1 main span
Daily traffic
3,978
2023 count
Owner
State
State Highway Agency

About this bridge

S-W Ramp over W-W Ramp is a prestressed concrete stringer/multi-beam or girder carrying S-W Ramp over W-W Ramp in Cowlitz County, Washington. It was built in 2011, so it is 14 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,978 vehicles a day, roughly 32% of them trucks, projected to reach 5,234 by 2039. The structure is 126 ft (38.4 m) long and 31 ft wide.

Location

Open in Google Maps
CarriesS-W Ramp
CrossesW-W Ramp
LocationJCT SR 432
RouteInterstate 5
CountyCowlitz County
StateWashington
Coordinates46.10739, -122.88231
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.7 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length126 ft (38.4 m)
Longest span116 ft (35.3 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,978 (2023)
Projected traffic5,234 by 2039
Trucks32%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-W Ramp over W-W Ramp built?

It was built in 2011, making it 14 years old in 2025.

What condition is S-W Ramp over W-W Ramp in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does S-W Ramp over W-W Ramp carry?

About 3,978 vehicles per day (2023 count), of which roughly 32% are trucks.

How long is S-W Ramp over W-W Ramp?

The structure is 126 ft (38.4 m) long with a longest span of 116 ft (35.3 m) and a deck 31 ft wide.

Who owns S-W Ramp over W-W Ramp?

It is owned by the State Highway Agency.