US Bridges

US 20 (hwy 007) over Chimney CREEK(7th Xing)

Fair

Malheur County, Oregon · 2.9 Mi. E Harney CO Line · Structure no. 01852A007 18305

Built
1966
59 years old
Condition
Fair
inspected June 2024
Type
Channel Beam
Concrete
Length
45 ft
2 main spans
Daily traffic
1,475
2022 count
Owner
State
State Highway Agency

About this bridge

US 20 (hwy 007) over Chimney CREEK(7th Xing) is a concrete channel beam carrying US 20 (hwy 007) over Chimney CREEK(7th Xing) in Malheur County, Oregon. It was built in 1966, so it is 59 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.

It carries about 1,475 vehicles a day, roughly 28% of them trucks, projected to reach 1,600 by 2042. The structure is 45 ft (13.8 m) long and 39 ft wide. If it were closed, the detour would be 41.6 mi (67 km).

CarriesUS 20 (hwy 007)
CrossesChimney CREEK(7th Xing)
Location2.9 Mi. E Harney CO Line
RouteU.S. Route 20
StateOregon
Coordinates43.77438, -118.18506
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
Deck8 Very GoodNo problems noted.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length45 ft (13.8 m)
Longest span23 ft (7 m)
Deck width39 ft (12 m)
Roadway width38 ft (11.7 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 closed41.6 mi (67 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) over Chimney CREEK(7th Xing) built?

It was built in 1966, making it 59 years old in 2025.

What condition is US 20 (hwy 007) over Chimney CREEK(7th 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) over Chimney CREEK(7th Xing) carry?

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

How long is US 20 (hwy 007) over Chimney CREEK(7th Xing)?

The structure is 45 ft (13.8 m) long with a longest span of 23 ft (7 m) and a deck 39 ft wide.

Who owns US 20 (hwy 007) over Chimney CREEK(7th Xing)?

It is owned by the State Highway Agency.