US Bridges

Or 66 (hwy 021) over Klamath River

Good

Klamath County, Oregon · 160 MI Jackson Klammath L · Structure no. 19789 021 04386

Built
2005
20 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
558 ft
3 main spans
Daily traffic
364
2022 count
Owner
State
State Highway Agency

About this bridge

Or 66 (hwy 021) over Klamath River is a steel continuous stringer/multi-beam or girder carrying Or 66 (hwy 021) over Klamath River in Klamath County, Oregon. It was built in 2005, so it is 20 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 364 vehicles a day, roughly 11% of them trucks, projected to reach 370 by 2042. The structure is 558 ft (170 m) long and 43 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesOr 66 (hwy 021)
CrossesKlamath River
Location160 MI Jackson Klammath L
RouteState Highway 66
CountyKlamath County
StateOregon
Coordinates42.13613, -122.03197
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length558 ft (170 m)
Longest span217 ft (66 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic364 (2022)
Projected traffic370 by 2042
Trucks11%
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 66 (hwy 021) over Klamath River built?

It was built in 2005, making it 20 years old in 2025.

What condition is Or 66 (hwy 021) over Klamath River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

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

About 364 vehicles per day (2022 count), of which roughly 11% are trucks.

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

The structure is 558 ft (170 m) long with a longest span of 217 ft (66 m) and a deck 43 ft wide.

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

It is owned by the State Highway Agency.