US Bridges

HWY 331 over Umatilla River

Fair

Umatilla County, Oregon · 2.5 Mi.N.Jct. I-84 · Structure no. 08598 331 00202

Built
1960
65 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
294 ft
5 main spans
Daily traffic
2,104
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 331 over Umatilla River is a concrete continuous tee beam carrying HWY 331 over Umatilla River in Umatilla County, Oregon. It was built in 1960, so it is 65 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 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 2,104 vehicles a day, roughly 16% of them trucks, projected to reach 2,200 by 2042. The structure is 294 ft (89.6 m) long and 31 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesHWY 331
CrossesUmatilla River
Location2.5 Mi.N.Jct. I-84
RouteState Highway 331
CountyUmatilla County
StateOregon
Coordinates45.67466, -118.68396
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.
Superstructure7 GoodSome minor problems.
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 inspectionSeptember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length294 ft (89.6 m)
Longest span64 ft (19.5 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,104 (2022)
Projected traffic2,200 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 HWY 331 over Umatilla River built?

It was built in 1960, making it 65 years old in 2025.

What condition is HWY 331 over Umatilla 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 September 2024.

How much traffic does HWY 331 over Umatilla River carry?

About 2,104 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is HWY 331 over Umatilla River?

The structure is 294 ft (89.6 m) long with a longest span of 64 ft (19.5 m) and a deck 31 ft wide.

Who owns HWY 331 over Umatilla River?

It is owned by the State Highway Agency.