US Bridges

Nyberg Road over I-5 (hwy 001)

Fair

Washington County, Oregon · 0.4 MI S of Tualatin Rv · Structure no. 07582A001C28950

Built
1975
50 years old, rebuilt 2005
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
264 ft
3 main spans
Daily traffic
38,158
2022 count
Owner
State
State Highway Agency

About this bridge

Nyberg Road over I-5 (hwy 001) is a prestressed concrete continuous box beam or girders - multiple carrying Nyberg Road over I-5 (hwy 001) in Washington County, Oregon. It was built in 1975 and reconstructed in 2005, so it is 50 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 38,158 vehicles a day, roughly 9% of them trucks, projected to reach 148,500 by 2030. The structure is 264 ft (80.5 m) long and 104 ft wide.

Location

Open in Google Maps
CarriesNyberg Road
CrossesI-5 (hwy 001)
Location0.4 MI S of Tualatin Rv
RouteInterstate 5
CountyWashington County
StateOregon
Coordinates45.38266, -122.75246
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length264 ft (80.5 m)
Longest span120 ft (36.6 m)
Deck width104 ft (31.7 m)
Roadway width94 ft (28.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,158 (2022)
Projected traffic148,500 by 2030
Trucks9%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 Nyberg Road over I-5 (hwy 001) built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2005.

What condition is Nyberg Road over I-5 (hwy 001) 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 Nyberg Road over I-5 (hwy 001) carry?

About 38,158 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Nyberg Road over I-5 (hwy 001)?

The structure is 264 ft (80.5 m) long with a longest span of 120 ft (36.6 m) and a deck 104 ft wide.

Who owns Nyberg Road over I-5 (hwy 001)?

It is owned by the State Highway Agency.