US Bridges

39th ST over I-5

Fair

Clark County, Washington · 0.1 N JCT SR 500 · Structure no. 0010694C0000000

Built
1980
45 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
282 ft
3 main spans
Daily traffic
14,876
2012 count
Owner
State
State Highway Agency

About this bridge

39th ST over I-5 is a concrete continuous box beam or girders - multiple carrying 39th ST over I-5 in Clark County, Washington. It was built in 1980, so it is 45 years old, younger 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 14,876 vehicles a day, roughly 2% of them trucks, projected to reach 23,445 by 2036. The structure is 282 ft (86 m) long and 57 ft wide.

Carries39th ST
CrossesI-5
Location0.1 N JCT SR 500
RouteCity Street 0
Coordinates45.64983, -122.66242
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating32.5 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length282 ft (86 m)
Longest span85 ft (25.9 m)
Deck width57 ft (17.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,876 (2012)
Projected traffic23,445 by 2036
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 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 39th ST over I-5 built?

It was built in 1980, making it 45 years old in 2025.

What condition is 39th ST over I-5 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 September 2023.

How much traffic does 39th ST over I-5 carry?

About 14,876 vehicles per day (2012 count), of which roughly 2% are trucks.

How long is 39th ST over I-5?

The structure is 282 ft (86 m) long with a longest span of 85 ft (25.9 m) and a deck 57 ft wide.

Who owns 39th ST over I-5?

It is owned by the State Highway Agency.