US Bridges

US 20 (hwy 007) SB over Chimney CREEK(9th Xing)

FairPosted for load

Malheur County, Oregon · 055 MI E Harney CO Line · Structure no. 02180A007 18562

Built
1936
89 years old, rebuilt 1964
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
22 ft
1 main span
Daily traffic
1,475
2022 count
Owner
State
State Highway Agency

About this bridge

US 20 (hwy 007) SB over Chimney CREEK(9th Xing) is a concrete continuous tee beam carrying US 20 (hwy 007) SB over Chimney CREEK(9th Xing) in Malheur County, Oregon. It was built in 1936 and reconstructed in 1964, so it is 89 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 1,475 vehicles a day, roughly 28% of them trucks, projected to reach 1,600 by 2042. The structure is 22 ft (6.7 m) long and 38 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesUS 20 (hwy 007) SB
CrossesChimney CREEK(9th Xing)
Location055 MI E Harney CO Line
RouteU.S. Route 20
CountyMalheur County
StateOregon
Coordinates43.7659, -118.142
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 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 rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width38 ft (11.7 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,475 (2022)
Projected traffic1,600 by 2042
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 20 (hwy 007) SB over Chimney CREEK(9th Xing) built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1964.

What condition is US 20 (hwy 007) SB over Chimney CREEK(9th Xing) 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 June 2024.

How much traffic does US 20 (hwy 007) SB over Chimney CREEK(9th Xing) carry?

About 1,475 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is US 20 (hwy 007) SB over Chimney CREEK(9th Xing)?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 38 ft wide.

Who owns US 20 (hwy 007) SB over Chimney CREEK(9th Xing)?

It is owned by the State Highway Agency.