US Bridges

Airport DR over Oak Creek

FairPosted for load

Linn County, Oregon · 010 MI S JCT HWY 34 CR705 · Structure no. 12651A070700162

Built
1984
41 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
73 ft
2 main spans
Daily traffic
7,004
2021 count
Owner
County
County Highway Agency

About this bridge

Airport DR over Oak Creek is a prestressed concrete slab carrying Airport DR over Oak Creek in Linn County, Oregon. It was built in 1984, so it is 41 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. Its operating status is: posted for load restriction.

It carries about 7,004 vehicles a day, roughly 15% of them trucks, projected to reach 9,785 by 2041. The structure is 73 ft (22.3 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesAirport DR
CrossesOak Creek
Location010 MI S JCT HWY 34 CR705
RouteCounty Highway A0481
CountyLinn County
StateOregon
Coordinates44.52797, -122.95336
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length73 ft (22.3 m)
Longest span36 ft (11 m)
Deck width36 ft (11 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,004 (2021)
Projected traffic9,785 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Airport DR over Oak Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Airport DR over Oak Creek 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 Airport DR over Oak Creek carry?

About 7,004 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Airport DR over Oak Creek?

The structure is 73 ft (22.3 m) long with a longest span of 36 ft (11 m) and a deck 36 ft wide.

Who owns Airport DR over Oak Creek?

It is owned by the County Highway Agency.