US Bridges

HWY 140 over Tualatin River

Fair

Washington County, Oregon · 001 MI S Hillsboro · Structure no. 01081 140 00139

Built
1924
101 years old, rebuilt 1989
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
8,728
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 140 over Tualatin River is a concrete continuous tee beam carrying HWY 140 over Tualatin River in Washington County, Oregon. It was built in 1924 and reconstructed in 1989, so it is 101 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 5 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 8,728 vehicles a day, roughly 7% of them trucks, projected to reach 11,900 by 2042. The structure is 150 ft (45.7 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY 140
CrossesTualatin River
Location001 MI S Hillsboro
RouteState Highway 219
CountyWashington County
StateOregon
Coordinates45.50016, -122.99129
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating20 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length150 ft (45.7 m)
Longest span50 ft (15.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,728 (2022)
Projected traffic11,900 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY 140 over Tualatin River built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1989.

What condition is HWY 140 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 April 2024.

How much traffic does HWY 140 over Tualatin River carry?

About 8,728 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is HWY 140 over Tualatin River?

The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.2 m) and a deck 43 ft wide.

Who owns HWY 140 over Tualatin River?

It is owned by the State Highway Agency.