US Bridges

Wilson River Loop over Oflow Bridge

Fair

Tillamook County, Oregon · .12 M N of HWY 37 · Structure no. 18592 694 00082

Built
2000
25 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
463 ft
9 main spans
Daily traffic
2,962
2020 count
Owner
County
County Highway Agency

About this bridge

Wilson River Loop over Oflow Bridge is a concrete continuous slab carrying Wilson River Loop over Oflow Bridge in Tillamook County, Oregon. It was built in 2000, so it is 25 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 2,962 vehicles a day, roughly 15% of them trucks, projected to reach 3,412 by 2025. The structure is 463 ft (141.1 m) long and 31 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
CarriesWilson River Loop
CrossesOflow Bridge
Location.12 M N of HWY 37
RouteCounty Highway A0724
CountyTillamook County
StateOregon
Coordinates45.46553, -123.80952
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHL 93
Structure length463 ft (141.1 m)
Longest span52 ft (15.7 m)
Deck width31 ft (9.6 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,962 (2020)
Projected traffic3,412 by 2025
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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 Wilson River Loop over Oflow Bridge built?

It was built in 2000, making it 25 years old in 2025.

What condition is Wilson River Loop over Oflow Bridge 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 August 2024.

How much traffic does Wilson River Loop over Oflow Bridge carry?

About 2,962 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Wilson River Loop over Oflow Bridge?

The structure is 463 ft (141.1 m) long with a longest span of 52 ft (15.7 m) and a deck 31 ft wide.

Who owns Wilson River Loop over Oflow Bridge?

It is owned by the County Highway Agency.