US Bridges

Ainsworth ST over HWY 001 (I-5)

Fair

Multnomah County, Oregon · 3.2 MI N of Burnside Br · Structure no. 09000 001 30468

Built
1964
61 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
209 ft
4 main spans
Daily traffic
114,153
2020 count
Owner
State
State Highway Agency

About this bridge

Ainsworth ST over HWY 001 (I-5) is a concrete continuous box beam or girders - multiple carrying Ainsworth ST over HWY 001 (I-5) in Multnomah County, Oregon. It was built in 1964, so it is 61 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 5 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 114,153 vehicles a day, roughly 15% of them trucks, projected to reach 150,400 by 2040. The structure is 209 ft (63.7 m) long and 60 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesAinsworth ST
CrossesHWY 001 (I-5)
Location3.2 MI N of Burnside Br
RouteCity Street 0
CountyMultnomah County
StateOregon
Coordinates45.56638, -122.67862
Functional classUrban Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length209 ft (63.7 m)
Longest span59 ft (18.1 m)
Deck width60 ft (18.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic114,153 (2020)
Projected traffic150,400 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ainsworth ST over HWY 001 (I-5) built?

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

What condition is Ainsworth ST over HWY 001 (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 December 2024.

How much traffic does Ainsworth ST over HWY 001 (I-5) carry?

About 114,153 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Ainsworth ST over HWY 001 (I-5)?

The structure is 209 ft (63.7 m) long with a longest span of 59 ft (18.1 m) and a deck 60 ft wide.

Who owns Ainsworth ST over HWY 001 (I-5)?

It is owned by the State Highway Agency.