US Bridges

I-84 (hwy 006) EB over Baldock Slough

Good

Baker County, Oregon · 113 MI SE Union CO Line · Structure no. 09507A006 29678

Built
1972
53 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
86 ft
3 main spans
Daily traffic
6,263
2022 count
Owner
State
State Highway Agency

About this bridge

I-84 (hwy 006) EB over Baldock Slough is a concrete continuous slab carrying I-84 (hwy 006) EB over Baldock Slough in Baker County, Oregon. It was built in 1972, so it is 53 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 6,263 vehicles a day, roughly 36% of them trucks, projected to reach 7,050 by 2042. The structure is 86 ft (26.3 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-84 (hwy 006) EB
CrossesBaldock Slough
Location113 MI SE Union CO Line
RouteInterstate 84
CountyBaker County
StateOregon
Coordinates44.88928, -117.81933
Functional classRural Principal Arterial - Interstate

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating36.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length86 ft (26.3 m)
Longest span40 ft (12.2 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,263 (2022)
Projected traffic7,050 by 2042
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-84 (hwy 006) EB over Baldock Slough built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-84 (hwy 006) EB over Baldock Slough 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 April 2024.

How much traffic does I-84 (hwy 006) EB over Baldock Slough carry?

About 6,263 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I-84 (hwy 006) EB over Baldock Slough?

The structure is 86 ft (26.3 m) long with a longest span of 40 ft (12.2 m) and a deck 44 ft wide.

Who owns I-84 (hwy 006) EB over Baldock Slough?

It is owned by the State Highway Agency.