US Bridges

SR 411 over Burlington Northern RR

FairPosted for load

Cowlitz County, Washington · 13.3 N JCT SR 432 · Structure no. 081276000000000

Built
1922
103 years old, rebuilt 1972
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
147 ft
5 main spans
Daily traffic
5,301
2023 count
Owner
State
State Highway Agency

About this bridge

SR 411 over Burlington Northern RR is a concrete continuous tee beam carrying SR 411 over Burlington Northern RR in Cowlitz County, Washington. It was built in 1922 and reconstructed in 1972, so it is 103 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. Its operating status is: posted for load restriction.

It carries about 5,301 vehicles a day, roughly 7% of them trucks, projected to reach 6,899 by 2039. The structure is 147 ft (44.8 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 411
CrossesBurlington Northern RR
Location13.3 N JCT SR 432
RouteState Highway 411
CountyCowlitz County
StateWashington
Coordinates46.28196, -122.90646
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 15
Structure length147 ft (44.8 m)
Longest span40 ft (12.2 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,301 (2023)
Projected traffic6,899 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.5 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 411 over Burlington Northern RR built?

It was built in 1922, making it 103 years old in 2025. It was reconstructed in 1972.

What condition is SR 411 over Burlington Northern RR 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 September 2024.

How much traffic does SR 411 over Burlington Northern RR carry?

About 5,301 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SR 411 over Burlington Northern RR?

The structure is 147 ft (44.8 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.

Who owns SR 411 over Burlington Northern RR?

It is owned by the State Highway Agency.