US Bridges

I-5 (hwy 1) over Miller Creek

FairPosted for load

Marion County, Oregon · 010 MI N Jefferson JCT · Structure no. 03469A001 24587

Built
1958
67 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
20 ft
2 main spans
Daily traffic
69,297
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 1) over Miller Creek is a concrete continuous culvert carrying I-5 (hwy 1) over Miller Creek in Marion County, Oregon. It was built in 1958, so it is 67 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 69,297 vehicles a day, roughly 15% of them trucks, projected to reach 74,700 by 2042. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5 (hwy 1)
CrossesMiller Creek
Location010 MI N Jefferson JCT
RouteInterstate 5
CountyMarion County
StateOregon
Coordinates44.80998, -123.02758
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,297 (2022)
Projected traffic74,700 by 2042
Trucks15%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 I-5 (hwy 1) over Miller Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is I-5 (hwy 1) over Miller 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 I-5 (hwy 1) over Miller Creek carry?

About 69,297 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is I-5 (hwy 1) over Miller Creek?

The structure is 20 ft (6.1 m) long with a longest span of 10 ft (3 m).

Who owns I-5 (hwy 1) over Miller Creek?

It is owned by the State Highway Agency.