US Bridges

I-5 (hwy 001) NB over Corp

Fair

Douglas County, Oregon · 00.8 MI N of HWY 236 JCT · Structure no. 07640 001 15079

Built
1954
71 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete Continuous
Length
167 ft
3 main spans
Daily traffic
11,165
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) NB over Corp is a concrete continuous tee beam carrying I-5 (hwy 001) NB over Corp in Douglas County, Oregon. It was built in 1954, so it is 71 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 11,165 vehicles a day, roughly 25% of them trucks, projected to reach 11,600 by 2042. The structure is 167 ft (50.9 m) long and 45 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

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CarriesI-5 (hwy 001) NB
CrossesCorp
Location00.8 MI N of HWY 236 JCT
RouteInterstate 5
CountyDouglas County
StateOregon
Coordinates43.56837, -123.27454
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length167 ft (50.9 m)
Longest span64 ft (19.5 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,165 (2022)
Projected traffic11,600 by 2042
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed18.6 mi (30 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 (hwy 001) NB over Corp built?

It was built in 1954, making it 71 years old in 2025.

What condition is I-5 (hwy 001) NB over Corp 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 February 2023.

How much traffic does I-5 (hwy 001) NB over Corp carry?

About 11,165 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is I-5 (hwy 001) NB over Corp?

The structure is 167 ft (50.9 m) long with a longest span of 64 ft (19.5 m) and a deck 45 ft wide.

Who owns I-5 (hwy 001) NB over Corp?

It is owned by the State Highway Agency.