US Bridges

SR 433 over Columbia R @ Longview

Fair

Cowlitz County, Washington · Oregon Line · Structure no. 0003760A0000000

Built
1929
96 years old, rebuilt 2003
Condition
Fair
inspected February 2024
Type
Truss - Thru
Steel Continuous
Length
5,478 ft
3 main spans
Daily traffic
20,432
2023 count
Owner
State
State Highway Agency

About this bridge

SR 433 over Columbia R @ Longview is a steel continuous truss - thru carrying SR 433 over Columbia R @ Longview in Cowlitz County, Washington. It was built in 1929 and reconstructed in 2003, so it is 96 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 20,432 vehicles a day, roughly 10% of them trucks, projected to reach 30,510 by 2039. The structure is 5,478 ft (1,669.7 m) long and 36 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR 433
CrossesColumbia R @ Longview
LocationOregon Line
RouteState Highway 433
CountyCowlitz County
StateWashington
Coordinates46.09911, -122.96692
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating23 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckConcrete, precast panels
Main spans3 (+31 approach)
Design loadH 20
Structure length5,478 ft (1,669.7 m)
Longest span1,200 ft (365.8 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic20,432 (2023)
Projected traffic30,510 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$83.3 million (2022 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR 433 over Columbia R @ Longview built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 2003.

What condition is SR 433 over Columbia R @ Longview in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does SR 433 over Columbia R @ Longview carry?

About 20,432 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR 433 over Columbia R @ Longview?

The structure is 5,478 ft (1,669.7 m) long with a longest span of 1,200 ft (365.8 m) and a deck 36 ft wide.

Who owns SR 433 over Columbia R @ Longview?

It is owned by the State Highway Agency.