US Bridges

Or 140 (hwy 431) over Blue Creek

FairPosted for load

Lake County, Oregon · 128 MI W Adel · Structure no. 03936A431 01541

Built
1967
58 years old
Condition
Fair
inspected May 2024
Type
Slab
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
351
2022 count
Owner
State
State Highway Agency

About this bridge

Or 140 (hwy 431) over Blue Creek is a prestressed concrete slab carrying Or 140 (hwy 431) over Blue Creek in Lake County, Oregon. It was built in 1967, so it is 58 years old, older than the Oregon average of 49.9 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: posted for other load-capacity restriction.

It carries about 351 vehicles a day, roughly 35% of them trucks, projected to reach 360 by 2042. The structure is 28 ft (8.5 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesOr 140 (hwy 431)
CrossesBlue Creek
Location128 MI W Adel
RouteState Highway 140
StateOregon
Coordinates42.2163, -120.10572
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic351 (2022)
Projected traffic360 by 2042
Trucks35%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 140 (hwy 431) over Blue Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Or 140 (hwy 431) over Blue Creek 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 May 2024.

How much traffic does Or 140 (hwy 431) over Blue Creek carry?

About 351 vehicles per day (2022 count), of which roughly 35% are trucks.

How long is Or 140 (hwy 431) over Blue Creek?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 32 ft wide.

Who owns Or 140 (hwy 431) over Blue Creek?

It is owned by the State Highway Agency.