US Bridges

SE 45th Ave over B-90 over Johnson Creek

Fair

Multnomah County, Oregon · SE Portland FAU 9704 · Structure no. 51C04 000 00001

Built
1927
98 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
43 ft
1 main span
Daily traffic
16,718
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

SE 45th Ave over B-90 over Johnson Creek is a concrete tee beam carrying SE 45th Ave over B-90 over Johnson Creek in Multnomah County, Oregon. It was built in 1927, so it is 98 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 16,718 vehicles a day, roughly 10% of them trucks, projected to reach 18,438 by 2025. The structure is 43 ft (13.1 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSE 45th Ave
CrossesB-90 over Johnson Creek
LocationSE Portland FAU 9704
RouteCounty Highway 9704
CountyMultnomah County
StateOregon
Coordinates45.46188, -122.61667
Functional classUrban Collector

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 inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.5 US tons
Inventory rating25 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width51 ft (15.4 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,718 (2020)
Projected traffic18,438 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SE 45th Ave over B-90 over Johnson Creek built?

It was built in 1927, making it 98 years old in 2025.

What condition is SE 45th Ave over B-90 over Johnson Creek 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 May 2023.

How much traffic does SE 45th Ave over B-90 over Johnson Creek carry?

About 16,718 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is SE 45th Ave over B-90 over Johnson Creek?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 51 ft wide.

Who owns SE 45th Ave over B-90 over Johnson Creek?

It is owned by the City or Municipal Highway Agency.