US Bridges

I-205 over ST Johns RD

Fair

Clark County, Washington · 3.4 N JCT SR 500 · Structure no. 0009241G0000000

Built
1973
52 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
212 ft
3 main spans
Daily traffic
37,534
2023 count
Owner
State
State Highway Agency

About this bridge

I-205 over ST Johns RD is a prestressed concrete continuous stringer/multi-beam or girder carrying I-205 over ST Johns RD in Clark County, Washington. It was built in 1973, so it is 52 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 37,534 vehicles a day, roughly 7% of them trucks, projected to reach 53,885 by 2039. The structure is 212 ft (64.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-205
CrossesST Johns RD
Location3.4 N JCT SR 500
RouteInterstate 205
CountyClark County
StateWashington
Coordinates45.69591, -122.61089
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
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 rating34.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length212 ft (64.6 m)
Longest span108 ft (32.9 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,534 (2023)
Projected traffic53,885 by 2039
Trucks7%
Lanes on structure2
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-205 over ST Johns RD built?

It was built in 1973, making it 52 years old in 2025.

What condition is I-205 over ST Johns RD 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 October 2023.

How much traffic does I-205 over ST Johns RD carry?

About 37,534 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is I-205 over ST Johns RD?

The structure is 212 ft (64.6 m) long with a longest span of 108 ft (32.9 m) and a deck 41 ft wide.

Who owns I-205 over ST Johns RD?

It is owned by the State Highway Agency.