US Bridges

Apiary Road over Oak Ranch Creek

Poor

Columbia County, Oregon · MP 18.80 Apiary Road · Structure no. 21342 000 01880

Built
2009
16 years old
Condition
Poor
inspected May 2023
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
1,200
2020 count
Owner
County
County Highway Agency

About this bridge

Apiary Road over Oak Ranch Creek is a concrete slab carrying Apiary Road over Oak Ranch Creek in Columbia County, Oregon. It was built in 2009, so it is 16 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,200 vehicles a day, roughly 20% of them trucks, projected to reach 1,300 by 2025. The structure is 25 ft (7.7 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesApiary Road
CrossesOak Ranch Creek
LocationMP 18.80 Apiary Road
RouteCounty Highway 0
CountyColumbia County
StateOregon
Coordinates45.94762, -123.1544
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span25 ft (7.7 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2020)
Projected traffic1,300 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Apiary Road over Oak Ranch Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is Apiary Road over Oak Ranch Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does Apiary Road over Oak Ranch Creek carry?

About 1,200 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Apiary Road over Oak Ranch Creek?

The structure is 25 ft (7.7 m) long with a longest span of 25 ft (7.7 m) and a deck 41 ft wide.

Who owns Apiary Road over Oak Ranch Creek?

It is owned by the County Highway Agency.