US Bridges

WB Con to HWY 1 SB over HWY 1

Fair

Multnomah County, Oregon · 0.1 MI E Portland Cc · Structure no. 08588B002 00002

Built
1963
62 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,419 ft
12 main spans
Daily traffic
76,816
2022 count
Owner
State
State Highway Agency

About this bridge

WB Con to HWY 1 SB over HWY 1 is a steel stringer/multi-beam or girder carrying WB Con to HWY 1 SB over HWY 1 in Multnomah County, Oregon. It was built in 1963, so it is 62 years old, older than the Oregon average of 49.9 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 76,816 vehicles a day, roughly 7% of them trucks, projected to reach 80,200 by 2042. The structure is 1,419 ft (432.5 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWB Con to HWY 1 SB
CrossesHWY 1
Location0.1 MI E Portland Cc
RouteInterstate 84
CountyMultnomah County
StateOregon
Coordinates45.52429, -122.66543
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans12 (+4 approach)
Design loadHS 20
Structure length1,419 ft (432.5 m)
Longest span135 ft (41.1 m)
Deck width37 ft (11.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,816 (2022)
Projected traffic80,200 by 2042
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway, waterway and railroad
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$8.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB Con to HWY 1 SB over HWY 1 built?

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

What condition is WB Con to HWY 1 SB over HWY 1 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 April 2023.

How much traffic does WB Con to HWY 1 SB over HWY 1 carry?

About 76,816 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is WB Con to HWY 1 SB over HWY 1?

The structure is 1,419 ft (432.5 m) long with a longest span of 135 ft (41.1 m) and a deck 37 ft wide.

Who owns WB Con to HWY 1 SB over HWY 1?

It is owned by the State Highway Agency.