US Bridges

I-5 over I-205 SB

Fair

Clark County, Washington · 5.3 N JCT SR 500 · Structure no. 0005818A0000000

Built
1959
66 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
243 ft
3 main spans
Daily traffic
27,730
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 over I-205 SB is a concrete continuous box beam or girders - multiple carrying I-5 over I-205 SB in Clark County, Washington. It was built in 1959, so it is 66 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 27,730 vehicles a day, roughly 8% of them trucks, projected to reach 43,089 by 2039. The structure is 243 ft (74.1 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5
CrossesI-205 SB
Location5.3 N JCT SR 500
RouteInterstate 5
CountyClark County
StateWashington
Coordinates45.72197, -122.65494
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating36.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span96 ft (29.3 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,730 (2023)
Projected traffic43,089 by 2039
Trucks8%
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$4.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 over I-205 SB built?

It was built in 1959, making it 66 years old in 2025.

What condition is I-5 over I-205 SB 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 November 2023.

How much traffic does I-5 over I-205 SB carry?

About 27,730 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is I-5 over I-205 SB?

The structure is 243 ft (74.1 m) long with a longest span of 96 ft (29.3 m) and a deck 34 ft wide.

Who owns I-5 over I-205 SB?

It is owned by the State Highway Agency.