US Bridges

Shelburn Drive over Bear Creek

Fair

Linn County, Oregon · 03.2 Mile North Scio · Structure no. 14008A000500448

Built
1978
47 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
60 ft
2 main spans
Daily traffic
489
2021 count
Owner
County
County Highway Agency

About this bridge

Shelburn Drive over Bear Creek is a prestressed concrete slab carrying Shelburn Drive over Bear Creek in Linn County, Oregon. It was built in 1978, so it is 47 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 489 vehicles a day, roughly 10% of them trucks, projected to reach 618 by 2041. The structure is 60 ft (18.3 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesShelburn Drive
CrossesBear Creek
Location03.2 Mile North Scio
RouteCounty Highway C0005
StateOregon
Coordinates44.75301, -122.85029
Functional classRural Local

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span29 ft (8.8 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic489 (2021)
Projected traffic618 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Shelburn Drive over Bear Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Shelburn Drive over Bear 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 July 2024.

How much traffic does Shelburn Drive over Bear Creek carry?

About 489 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Shelburn Drive over Bear Creek?

The structure is 60 ft (18.3 m) long with a longest span of 29 ft (8.8 m) and a deck 32 ft wide.

Who owns Shelburn Drive over Bear Creek?

It is owned by the County Highway Agency.