US Bridges

I-5 over Nbcd Viaduct Sta 2195

Fair

King County, Washington · 0.8 N JCT I-90 · Structure no. 0007110F0000000

Built
1964
61 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
702 ft
10 main spans
Daily traffic
30,675
2012 count
Owner
State
State Highway Agency

About this bridge

I-5 over Nbcd Viaduct Sta 2195 is a concrete continuous box beam or girders - multiple carrying I-5 over Nbcd Viaduct Sta 2195 in King County, Washington. It was built in 1964, so it is 61 years old, older than the Washington average of 49.8 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 30,675 vehicles a day, roughly 5% of them trucks, projected to reach 51,289 by 2036. The structure is 702 ft (214 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesI-5
CrossesNbcd Viaduct Sta 2195
Location0.8 N JCT I-90
RouteInterstate 5
Coordinates47.60426, -122.32708
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.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.6 US tons
Inventory rating15.3 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length702 ft (214 m)
Longest span80 ft (24.4 m)
Deck width37 ft (11.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,675 (2012)
Projected traffic51,289 by 2036
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$12 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 over Nbcd Viaduct Sta 2195 built?

It was built in 1964, making it 61 years old in 2025.

What condition is I-5 over Nbcd Viaduct Sta 2195 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 August 2023.

How much traffic does I-5 over Nbcd Viaduct Sta 2195 carry?

About 30,675 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is I-5 over Nbcd Viaduct Sta 2195?

The structure is 702 ft (214 m) long with a longest span of 80 ft (24.4 m) and a deck 37 ft wide.

Who owns I-5 over Nbcd Viaduct Sta 2195?

It is owned by the State Highway Agency.