US Bridges

I-5 (hwy 001) SB over I-5 SB Conn to I-205 NB

Fair

Washington County, Oregon · 1.4 MI S of Tualatin R. · Structure no. 09743A001 28851

Built
1969
56 years old
Condition
Fair
inspected January 2024
Type
Frame
Steel Continuous
Length
226 ft
3 main spans
Daily traffic
69,586
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) SB over I-5 SB Conn to I-205 NB is a steel continuous frame carrying I-5 (hwy 001) SB over I-5 SB Conn to I-205 NB in Washington County, Oregon. It was built in 1969, so it is 56 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 69,586 vehicles a day, roughly 9% of them trucks, projected to reach 82,450 by 2042. The structure is 226 ft (68.9 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5 (hwy 001) SB
CrossesI-5 SB Conn to I-205 NB
Location1.4 MI S of Tualatin R.
RouteInterstate 5
CountyWashington County
StateOregon
Coordinates45.3689, -122.75825
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeFrame
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length226 ft (68.9 m)
Longest span110 ft (33.5 m)
Deck width56 ft (17.2 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic69,586 (2022)
Projected traffic82,450 by 2042
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 (hwy 001) SB over I-5 SB Conn to I-205 NB built?

It was built in 1969, making it 56 years old in 2025.

What condition is I-5 (hwy 001) SB over I-5 SB Conn to I-205 NB 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 January 2024.

How much traffic does I-5 (hwy 001) SB over I-5 SB Conn to I-205 NB carry?

About 69,586 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is I-5 (hwy 001) SB over I-5 SB Conn to I-205 NB?

The structure is 226 ft (68.9 m) long with a longest span of 110 ft (33.5 m) and a deck 56 ft wide.

Who owns I-5 (hwy 001) SB over I-5 SB Conn to I-205 NB?

It is owned by the State Highway Agency.