US Bridges

SW Harbor Viaduct over SW Harr Riv Harb Sher

Fair

Multnomah County, Oregon · Approach Tilikum · Structure no. 22259 000 00000

Built
2015
10 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,739 ft
9 main spans
Daily traffic
500
2015 count
Owner
Local
Other Local Agency

About this bridge

SW Harbor Viaduct over SW Harr Riv Harb Sher is a steel stringer/multi-beam or girder carrying SW Harbor Viaduct over SW Harr Riv Harb Sher in Multnomah County, Oregon. It was built in 2015, so it is 10 years old, younger 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 500 vehicles a day, projected to reach 550 by 2035. The structure is 1,739 ft (529.9 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSW Harbor Viaduct
CrossesSW Harr Riv Harb Sher
LocationApproach Tilikum
CountyMultnomah County
StateOregon
Coordinates45.5048, -122.674
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans9
Design loadHL 93
Structure length1,739 ft (529.9 m)
Longest span232 ft (70.7 m)
Deck width34 ft (10.3 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic500 (2015)
Projected traffic550 by 2035
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and railroad
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local 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 SW Harbor Viaduct over SW Harr Riv Harb Sher built?

It was built in 2015, making it 10 years old in 2025.

What condition is SW Harbor Viaduct over SW Harr Riv Harb Sher 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 June 2023.

How much traffic does SW Harbor Viaduct over SW Harr Riv Harb Sher carry?

About 500 vehicles per day (2015 count).

How long is SW Harbor Viaduct over SW Harr Riv Harb Sher?

The structure is 1,739 ft (529.9 m) long with a longest span of 232 ft (70.7 m) and a deck 34 ft wide.

Who owns SW Harbor Viaduct over SW Harr Riv Harb Sher?

It is owned by the Other Local Agency.