US Bridges

Viaduct over Access Road

FairPosted for load

Multnomah County, Oregon · Ohsu · Structure no. 21765 000 00000

Built
1968
57 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
243 ft
17 main spans
Daily traffic
1,000
2010 count
Owner
State
Other State Agency

About this bridge

Viaduct over Access Road is a concrete continuous stringer/multi-beam or girder carrying Viaduct over Access Road in Multnomah County, Oregon. It was built in 1968, so it is 57 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. Its operating status is: posted for load restriction.

It carries about 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,200 by 2030. The structure is 243 ft (74.2 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesViaduct
CrossesAccess Road
LocationOhsu
RouteCity Street C0000
CountyMultnomah County
StateOregon
Coordinates45.50166, -122.68551
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.7 US tons
Inventory rating24.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans17
Design loadHL 93
Structure length243 ft (74.2 m)
Longest span15 ft (4.7 m)
Deck width26 ft (8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2010)
Projected traffic1,200 by 2030
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State 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 Viaduct over Access Road built?

It was built in 1968, making it 57 years old in 2025.

What condition is Viaduct over Access Road 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 Viaduct over Access Road carry?

About 1,000 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Viaduct over Access Road?

The structure is 243 ft (74.2 m) long with a longest span of 15 ft (4.7 m) and a deck 26 ft wide.

Who owns Viaduct over Access Road?

It is owned by the Other State Agency.