US Bridges

US 30 (hwy 493) over I-84 (hwy 6 MP 376.72)

Fair

Malheur County, Oregon · 1.7 Mi. W. Or-Id Line · Structure no. 18097 455Y02773

Built
1998
27 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
302 ft
2 main spans
Daily traffic
26,810
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 (hwy 493) over I-84 (hwy 6 MP 376.72) is a prestressed concrete continuous box beam or girders - multiple carrying US 30 (hwy 493) over I-84 (hwy 6 MP 376.72) in Malheur County, Oregon. It was built in 1998, so it is 27 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 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 26,810 vehicles a day, roughly 10% of them trucks, projected to reach 29,100 by 2042. The structure is 302 ft (92 m) long and 103 ft wide.

Location

Open in Google Maps
CarriesUS 30 (hwy 493)
CrossesI-84 (hwy 6 MP 376.72)
Location1.7 Mi. W. Or-Id Line
RouteU.S. Route 30
CountyMalheur County
StateOregon
Coordinates44.02474, -116.94887
Functional classUrban Other Principal 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.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.8 US tons
Inventory rating17.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length302 ft (92 m)
Longest span151 ft (46 m)
Deck width103 ft (31.4 m)
Roadway width83 ft (25.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,810 (2022)
Projected traffic29,100 by 2042
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 30 (hwy 493) over I-84 (hwy 6 MP 376.72) built?

It was built in 1998, making it 27 years old in 2025.

What condition is US 30 (hwy 493) over I-84 (hwy 6 MP 376.72) 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 April 2024.

How much traffic does US 30 (hwy 493) over I-84 (hwy 6 MP 376.72) carry?

About 26,810 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is US 30 (hwy 493) over I-84 (hwy 6 MP 376.72)?

The structure is 302 ft (92 m) long with a longest span of 151 ft (46 m) and a deck 103 ft wide.

Who owns US 30 (hwy 493) over I-84 (hwy 6 MP 376.72)?

It is owned by the State Highway Agency.