US Bridges

I-5 over SR 104 / NE 205th ST

Good

King County, Washington · 3.1 N JCT SR 523 · Structure no. 0007071A0000000

Built
1963
62 years old, rebuilt 1995
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
200 ft
3 main spans
Daily traffic
77,329
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 over SR 104 / NE 205th ST is a prestressed concrete stringer/multi-beam or girder carrying I-5 over SR 104 / NE 205th ST in King County, Washington. It was built in 1963 and reconstructed in 1995, so it is 62 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 77,329 vehicles a day, roughly 5% of them trucks, projected to reach 115,416 by 2039. The structure is 200 ft (61 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-5
CrossesSR 104 / NE 205th ST
Location3.1 N JCT SR 523
RouteInterstate 5
Coordinates47.77739, -122.31775
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length200 ft (61 m)
Longest span110 ft (33.5 m)
Deck width71 ft (21.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77,329 (2023)
Projected traffic115,416 by 2039
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 over SR 104 / NE 205th ST built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1995.

What condition is I-5 over SR 104 / NE 205th ST in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does I-5 over SR 104 / NE 205th ST carry?

About 77,329 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is I-5 over SR 104 / NE 205th ST?

The structure is 200 ft (61 m) long with a longest span of 110 ft (33.5 m) and a deck 71 ft wide.

Who owns I-5 over SR 104 / NE 205th ST?

It is owned by the State Highway Agency.