US Bridges

Three Rivers Road over Three Rivers Oflow

Fair

Tillamook County, Oregon · 030 MI SE of Hebo · Structure no. 17925 309200025

Built
1995
30 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
158
2020 count
Owner
Local
Other Local Agency

About this bridge

Three Rivers Road over Three Rivers Oflow is a prestressed concrete slab carrying Three Rivers Road over Three Rivers Oflow in Tillamook County, Oregon. It was built in 1995, so it is 30 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 158 vehicles a day, roughly 2% of them trucks, projected to reach 184 by 2025. The structure is 46 ft (14 m) long and 16 ft wide.

Location

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CarriesThree Rivers Road
CrossesThree Rivers Oflow
Location030 MI SE of Hebo
CountyTillamook County
StateOregon
Coordinates45.19445, -123.8296
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length46 ft (14 m)
Longest span45 ft (13.7 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic158 (2020)
Projected traffic184 by 2025
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$236,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Three Rivers Road over Three Rivers Oflow built?

It was built in 1995, making it 30 years old in 2025.

What condition is Three Rivers Road over Three Rivers Oflow 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 Three Rivers Road over Three Rivers Oflow carry?

About 158 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Three Rivers Road over Three Rivers Oflow?

The structure is 46 ft (14 m) long with a longest span of 45 ft (13.7 m) and a deck 16 ft wide.

Who owns Three Rivers Road over Three Rivers Oflow?

It is owned by the Other Local Agency.