US Bridges

I-5 (hwy 001) NB over Coast Fork Relief Openin

Fair

Lane County, Oregon · 4.91 N of Cottage Grove · Structure no. 2024100117964

Built
2005
20 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
19,034
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) NB over Coast Fork Relief Openin is a prestressed concrete box beam or girders - multiple carrying I-5 (hwy 001) NB over Coast Fork Relief Openin in Lane County, Oregon. It was built in 2005, so it is 20 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 19,034 vehicles a day, roughly 26% of them trucks, projected to reach 20,350 by 2042. The structure is 101 ft (30.8 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5 (hwy 001) NB
CrossesCoast Fork Relief Openin
Location4.91 N of Cottage Grove
RouteInterstate 5
CountyLane County
StateOregon
Coordinates43.87177, -123.01269
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating28.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length101 ft (30.8 m)
Longest span101 ft (30.8 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic19,034 (2022)
Projected traffic20,350 by 2042
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-5 (hwy 001) NB over Coast Fork Relief Openin built?

It was built in 2005, making it 20 years old in 2025.

What condition is I-5 (hwy 001) NB over Coast Fork Relief Openin 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 May 2024.

How much traffic does I-5 (hwy 001) NB over Coast Fork Relief Openin carry?

About 19,034 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is I-5 (hwy 001) NB over Coast Fork Relief Openin?

The structure is 101 ft (30.8 m) long with a longest span of 101 ft (30.8 m) and a deck 45 ft wide.

Who owns I-5 (hwy 001) NB over Coast Fork Relief Openin?

It is owned by the State Highway Agency.