US Bridges

Or 47 (hwy 102) over Beaver Creek

FairPosted for load

Columbia County, Oregon · 1.5 MI S Vernonia · Structure no. 02301 102 06460

Built
1936
89 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
87 ft
3 main spans
Daily traffic
2,713
2022 count
Owner
State
State Highway Agency

About this bridge

Or 47 (hwy 102) over Beaver Creek is a wood or timber stringer/multi-beam or girder carrying Or 47 (hwy 102) over Beaver Creek in Columbia County, Oregon. It was built in 1936, so it is 89 years old, older 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 2,713 vehicles a day, roughly 10% of them trucks, projected to reach 3,400 by 2042. The structure is 87 ft (26.5 m) long and 30 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

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CarriesOr 47 (hwy 102)
CrossesBeaver Creek
Location1.5 MI S Vernonia
RouteState Highway 47
CountyColumbia County
StateOregon
Coordinates45.83887, -123.21947
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating22.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length87 ft (26.5 m)
Longest span29 ft (8.8 m)
Deck width30 ft (9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,713 (2022)
Projected traffic3,400 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$461,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 47 (hwy 102) over Beaver Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is Or 47 (hwy 102) over Beaver 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 October 2024.

How much traffic does Or 47 (hwy 102) over Beaver Creek carry?

About 2,713 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Or 47 (hwy 102) over Beaver Creek?

The structure is 87 ft (26.5 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.

Who owns Or 47 (hwy 102) over Beaver Creek?

It is owned by the State Highway Agency.