US Bridges

FAS Route Z240 over Okanogan River

Fair

Okanogan County, Washington · .SWNWS27T40NR27E · Structure no. 083609000000000

Built
1971
54 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
1,527
2020 count
Owner
County
County Highway Agency

About this bridge

FAS Route Z240 over Okanogan River is a prestressed concrete tee beam carrying FAS Route Z240 over Okanogan River in Okanogan County, Washington. It was built in 1971, so it is 54 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.

It carries about 1,527 vehicles a day, roughly 10% of them trucks, projected to reach 2,500 by 2041. The structure is 180 ft (54.9 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS Route Z240
CrossesOkanogan River
Location.SWNWS27T40NR27E
RouteCounty Highway 94800
CountyOkanogan County
StateWashington
Coordinates48.93917, -119.42703
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating31.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span59 ft (18.1 m)
Deck width37 ft (11.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,527 (2020)
Projected traffic2,500 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS Route Z240 over Okanogan River built?

It was built in 1971, making it 54 years old in 2025.

What condition is FAS Route Z240 over Okanogan River 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 October 2023.

How much traffic does FAS Route Z240 over Okanogan River carry?

About 1,527 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is FAS Route Z240 over Okanogan River?

The structure is 180 ft (54.9 m) long with a longest span of 59 ft (18.1 m) and a deck 37 ft wide.

Who owns FAS Route Z240 over Okanogan River?

It is owned by the County Highway Agency.