US Bridges

Concomly Road over I-5 (hwy 1)

Fair

Marion County, Oregon · 053 MI S Woodburn Ncl · Structure no. 07849A001 26654

Built
1975
50 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
366 ft
2 main spans
Daily traffic
94,995
2022 count
Owner
State
State Highway Agency

About this bridge

Concomly Road over I-5 (hwy 1) is a prestressed concrete continuous stringer/multi-beam or girder carrying Concomly Road over I-5 (hwy 1) in Marion County, Oregon. It was built in 1975, so it is 50 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 94,995 vehicles a day, roughly 14% of them trucks, projected to reach 105,200 by 2042. The structure is 366 ft (111.6 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesConcomly Road
CrossesI-5 (hwy 1)
Location053 MI S Woodburn Ncl
RouteCounty Highway 0
CountyMarion County
StateOregon
Coordinates45.0886, -122.94429
Functional classRural Major 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.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length366 ft (111.6 m)
Longest span153 ft (46.6 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic94,995 (2022)
Projected traffic105,200 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Concomly Road over I-5 (hwy 1) built?

It was built in 1975, making it 50 years old in 2025.

What condition is Concomly Road over I-5 (hwy 1) 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 August 2024.

How much traffic does Concomly Road over I-5 (hwy 1) carry?

About 94,995 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Concomly Road over I-5 (hwy 1)?

The structure is 366 ft (111.6 m) long with a longest span of 153 ft (46.6 m) and a deck 34 ft wide.

Who owns Concomly Road over I-5 (hwy 1)?

It is owned by the State Highway Agency.