US Bridges

US 97 (hwy 004) over HWY 422

Fair

Klamath County, Oregon · 016 MI N HWY 422 JCT · Structure no. 06886 004 24754

Built
1946
79 years old, rebuilt 1991
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
6,383
2022 count
Owner
State
State Highway Agency

About this bridge

US 97 (hwy 004) over HWY 422 is a concrete continuous tee beam carrying US 97 (hwy 004) over HWY 422 in Klamath County, Oregon. It was built in 1946 and reconstructed in 1991, so it is 79 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 6,383 vehicles a day, roughly 28% of them trucks, projected to reach 7,900 by 2042. The structure is 100 ft (30.5 m) long and 47 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

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CarriesUS 97 (hwy 004)
CrossesHWY 422
Location016 MI N HWY 422 JCT
RouteU.S. Route 97
CountyKlamath County
StateOregon
Coordinates42.59221, -121.87958
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span40 ft (12.2 m)
Deck width47 ft (14.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,383 (2022)
Projected traffic7,900 by 2042
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed4.3 mi (7 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$512,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 97 (hwy 004) over HWY 422 built?

It was built in 1946, making it 79 years old in 2025. It was reconstructed in 1991.

What condition is US 97 (hwy 004) over HWY 422 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 US 97 (hwy 004) over HWY 422 carry?

About 6,383 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is US 97 (hwy 004) over HWY 422?

The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.2 m) and a deck 47 ft wide.

Who owns US 97 (hwy 004) over HWY 422?

It is owned by the State Highway Agency.