US Bridges

Or 201 (hwy 455) over Malheur River

Fair

Malheur County, Oregon · 0.5 MI N JCT I-84N · Structure no. 00731B455 02460

Built
1976
49 years old
Condition
Fair
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
383 ft
5 main spans
Daily traffic
13,346
2022 count
Owner
State
State Highway Agency

About this bridge

Or 201 (hwy 455) over Malheur River is a prestressed concrete continuous stringer/multi-beam or girder carrying Or 201 (hwy 455) over Malheur River in Malheur County, Oregon. It was built in 1976, so it is 49 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 5 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 13,346 vehicles a day, roughly 25% of them trucks, projected to reach 20,700 by 2042. The structure is 383 ft (116.7 m) long and 44 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesOr 201 (hwy 455)
CrossesMalheur River
Location0.5 MI N JCT I-84N
RouteState Highway 201
CountyMalheur County
StateOregon
Coordinates44.05639, -116.97901
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length383 ft (116.7 m)
Longest span80 ft (24.4 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,346 (2022)
Projected traffic20,700 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

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 Or 201 (hwy 455) over Malheur River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Or 201 (hwy 455) over Malheur River 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 October 2022.

How much traffic does Or 201 (hwy 455) over Malheur River carry?

About 13,346 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is Or 201 (hwy 455) over Malheur River?

The structure is 383 ft (116.7 m) long with a longest span of 80 ft (24.4 m) and a deck 44 ft wide.

Who owns Or 201 (hwy 455) over Malheur River?

It is owned by the State Highway Agency.