US Bridges

HWY 331 over I-84 (hwy 006)

Fair

Umatilla County, Oregon · 4.5 Mi.S.Jct. or 11 · Structure no. 09567 331 00451

Built
1971
54 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
416 ft
2 main spans
Daily traffic
7,732
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 331 over I-84 (hwy 006) is a prestressed concrete continuous box beam or girders - multiple carrying HWY 331 over I-84 (hwy 006) in Umatilla County, Oregon. It was built in 1971, so it is 54 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 7,732 vehicles a day, roughly 23% of them trucks, projected to reach 13,400 by 2042. The structure is 416 ft (126.8 m) long and 43 ft wide. If it were closed, the detour would be 42.9 mi (69 km).

Location

Open in Google Maps
CarriesHWY 331
CrossesI-84 (hwy 006)
Location4.5 Mi.S.Jct. or 11
RouteState Highway 331
CountyUmatilla County
StateOregon
Coordinates45.63843, -118.68406
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.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 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 rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length416 ft (126.8 m)
Longest span179 ft (54.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,732 (2022)
Projected traffic13,400 by 2042
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed42.9 mi (69 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY 331 over I-84 (hwy 006) built?

It was built in 1971, making it 54 years old in 2025.

What condition is HWY 331 over I-84 (hwy 006) 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 I-84 (hwy 006) carry?

About 7,732 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is HWY 331 over I-84 (hwy 006)?

The structure is 416 ft (126.8 m) long with a longest span of 179 ft (54.6 m) and a deck 43 ft wide.

Who owns HWY 331 over I-84 (hwy 006)?

It is owned by the State Highway Agency.