US Bridges

Or 66 (hwy 021) over Klamath River (keno)

Fair

Klamath County, Oregon · 001 Keno Oregon · Structure no. 00986A021 05010

Built
1985
40 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
376 ft
4 main spans
Daily traffic
2,680
2022 count
Owner
State
State Highway Agency

About this bridge

Or 66 (hwy 021) over Klamath River (keno) is a prestressed concrete stringer/multi-beam or girder carrying Or 66 (hwy 021) over Klamath River (keno) in Klamath County, Oregon. It was built in 1985, so it is 40 years old, younger 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 2,680 vehicles a day, roughly 11% of them trucks, projected to reach 2,800 by 2042. The structure is 376 ft (114.6 m) long and 49 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesOr 66 (hwy 021)
CrossesKlamath River (keno)
Location001 Keno Oregon
RouteState Highway 66
CountyKlamath County
StateOregon
Coordinates42.128, -121.92868
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length376 ft (114.6 m)
Longest span94 ft (28.7 m)
Deck width49 ft (15 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,680 (2022)
Projected traffic2,800 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.9 mi (32 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 66 (hwy 021) over Klamath River (keno) built?

It was built in 1985, making it 40 years old in 2025.

What condition is Or 66 (hwy 021) over Klamath River (keno) 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 March 2024.

How much traffic does Or 66 (hwy 021) over Klamath River (keno) carry?

About 2,680 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Or 66 (hwy 021) over Klamath River (keno)?

The structure is 376 ft (114.6 m) long with a longest span of 94 ft (28.7 m) and a deck 49 ft wide.

Who owns Or 66 (hwy 021) over Klamath River (keno)?

It is owned by the State Highway Agency.