US Bridges

B SE over Irrigation Canal

Fair

Grant County, Washington · B SE 2.1 Mile S of SR 26 · Structure no. 089393000000000

Built
1950
75 years old, rebuilt 2023
Condition
Fair
inspected July 2024
Type
Truss - Thru
Steel Continuous
Length
52 ft
1 main span
Daily traffic
36
2022 count
Owner
County
County Highway Agency

About this bridge

B SE over Irrigation Canal is a steel continuous truss - thru carrying B SE over Irrigation Canal in Grant County, Washington. It was built in 1950 and reconstructed in 2023, so it is 75 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 6 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: open, temporary structure in place while original is closed.

It carries about 36 vehicles a day, roughly 7% of them trucks, projected to reach 45 by 2045. The structure is 52 ft (15.7 m) long and 18 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesB SE
CrossesIrrigation Canal
LocationB SE 2.1 Mile S of SR 26
RouteCounty Highway 20550
CountyGrant County
StateWashington
Coordinates46.81917, -119.45389
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 6 months
Operating statusOpen, temporary structure in place while original is closed
ScourFoundations on dry land well above flood water elevations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckWood or timber
Main spans1
Design loadOther
Structure length52 ft (15.7 m)
Longest span52 ft (15.7 m)
Deck width18 ft (5.5 m)
Roadway width10 ft (3.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36 (2022)
Projected traffic45 by 2045
Trucks7%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was B SE over Irrigation Canal built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2023.

What condition is B SE over Irrigation Canal 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 July 2024.

How much traffic does B SE over Irrigation Canal carry?

About 36 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is B SE over Irrigation Canal?

The structure is 52 ft (15.7 m) long with a longest span of 52 ft (15.7 m) and a deck 18 ft wide.

Who owns B SE over Irrigation Canal?

It is owned by the County Highway Agency.