US Bridges

HWY 3 NB over Oswego Creek

Fair

Clackamas County, Oregon · 1.0 M S of Mcvey Ave · Structure no. 00409B003 00682

Built
1983
42 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
949 ft
3 main spans
Daily traffic
8,805
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 3 NB over Oswego Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying HWY 3 NB over Oswego Creek in Clackamas County, Oregon. It was built in 1983, so it is 42 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 8,805 vehicles a day, roughly 1% of them trucks, projected to reach 9,700 by 2042. The structure is 949 ft (289.4 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesHWY 3 NB
CrossesOswego Creek
Location1.0 M S of Mcvey Ave
RouteState Highway 43
CountyClackamas County
StateOregon
Coordinates45.41033, -122.66408
Functional classUrban Other Principal Arterial

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.5 US tons
Inventory rating9.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+14 approach)
Design loadHS 20 + Mod
Structure length949 ft (289.4 m)
Longest span134 ft (40.7 m)
Deck width34 ft (10.4 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,805 (2022)
Projected traffic9,700 by 2042
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY 3 NB over Oswego Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is HWY 3 NB over Oswego 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 December 2023.

How much traffic does HWY 3 NB over Oswego Creek carry?

About 8,805 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is HWY 3 NB over Oswego Creek?

The structure is 949 ft (289.4 m) long with a longest span of 134 ft (40.7 m) and a deck 34 ft wide.

Who owns HWY 3 NB over Oswego Creek?

It is owned by the State Highway Agency.