US Bridges

US 30 (hwy 066) WB over UPRR & Grande Ronde R

Fair

Union County, Oregon · 0.3 Mi. E. Jct. I-84 · Structure no. 08431 066 00026

Built
1960
65 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
676 ft
7 main spans
Daily traffic
790
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 (hwy 066) WB over UPRR & Grande Ronde R is a concrete continuous box beam or girders - multiple carrying US 30 (hwy 066) WB over UPRR & Grande Ronde R in Union 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 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 790 vehicles a day, roughly 16% of them trucks, projected to reach 850 by 2042. The structure is 676 ft (206 m) long and 25 ft wide. If it were closed, the detour would be 42.9 mi (69 km).

Location

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CarriesUS 30 (hwy 066) WB
CrossesUPRR & Grande Ronde R
Location0.3 Mi. E. Jct. I-84
RouteU.S. Route 30
CountyUnion County
StateOregon
Coordinates45.34186, -118.11719
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be 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 rating23.3 US tons
Inventory rating17.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadH 20
Structure length676 ft (206 m)
Longest span108 ft (32.9 m)
Deck width25 ft (7.5 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic790 (2022)
Projected traffic850 by 2042
Trucks16%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed42.9 mi (69 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$3.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 30 (hwy 066) WB over UPRR & Grande Ronde R built?

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

What condition is US 30 (hwy 066) WB over UPRR & Grande Ronde R 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 June 2023.

How much traffic does US 30 (hwy 066) WB over UPRR & Grande Ronde R carry?

About 790 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is US 30 (hwy 066) WB over UPRR & Grande Ronde R?

The structure is 676 ft (206 m) long with a longest span of 108 ft (32.9 m) and a deck 25 ft wide.

Who owns US 30 (hwy 066) WB over UPRR & Grande Ronde R?

It is owned by the State Highway Agency.