US Bridges

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

Good

Union County, Oregon · 0.1 Mi. E. Jct. I-84 · Structure no. 08431A066 00012

Built
1973
52 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
450 ft
3 main spans
Daily traffic
790
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 (hwy 066) EB over UPRR & Grande Ronde R is a prestressed concrete continuous stringer/multi-beam or girder carrying US 30 (hwy 066) EB over UPRR & Grande Ronde R in Union County, Oregon. It was built in 1973, so it is 52 years old, older 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 790 vehicles a day, roughly 16% of them trucks, projected to reach 850 by 2042. The structure is 450 ft (137.2 m) long and 31 ft wide. If it were closed, the detour would be 42.9 mi (69 km).

Location

Open in Google Maps
CarriesUS 30 (hwy 066) EB
CrossesUPRR & Grande Ronde R
Location0.1 Mi. E. Jct. I-84
RouteU.S. Route 30
CountyUnion County
StateOregon
Coordinates45.34162, -118.1178
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating37.8 US tons
Inventory rating29.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20
Structure length450 ft (137.2 m)
Longest span131 ft (39.9 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.6 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
CrossesRailroad and waterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 1973, making it 52 years old in 2025.

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

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

The structure is 450 ft (137.2 m) long with a longest span of 131 ft (39.9 m) and a deck 31 ft wide.

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

It is owned by the State Highway Agency.