US Bridges

Golf Course Road over Tualatin River

Fair

Washington County, Oregon · 106 MI S HWY 8 · Structure no. 671246A67800154

Built
1974
51 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
491 ft
12 main spans
Daily traffic
5,074
2020 count
Owner
County
County Highway Agency

About this bridge

Golf Course Road over Tualatin River is a prestressed concrete slab carrying Golf Course Road over Tualatin River in Washington County, Oregon. It was built in 1974, so it is 51 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.

It carries about 5,074 vehicles a day, roughly 10% of them trucks, projected to reach 5,744 by 2025. The structure is 491 ft (149.7 m) long and 49 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesGolf Course Road
CrossesTualatin River
Location106 MI S HWY 8
RouteCounty Highway A0678
CountyWashington County
StateOregon
Coordinates45.5022, -123.0562
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.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans12
Design loadHS 20
Structure length491 ft (149.7 m)
Longest span51 ft (15.5 m)
Deck width49 ft (14.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,074 (2020)
Projected traffic5,744 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 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 Golf Course Road over Tualatin River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Golf Course Road over Tualatin River 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 September 2024.

How much traffic does Golf Course Road over Tualatin River carry?

About 5,074 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Golf Course Road over Tualatin River?

The structure is 491 ft (149.7 m) long with a longest span of 51 ft (15.5 m) and a deck 49 ft wide.

Who owns Golf Course Road over Tualatin River?

It is owned by the County Highway Agency.