US Bridges

I-5 (HWY001) NB over Coast Fk Willamette Rive

Fair

Lane County, Oregon · 05.3MI N Cottage Grove · Structure no. 2024200117999

Built
2005
20 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
571 ft
5 main spans
Daily traffic
21,354
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (HWY001) NB over Coast Fk Willamette Rive is a prestressed concrete continuous stringer/multi-beam or girder carrying I-5 (HWY001) NB over Coast Fk Willamette Rive 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 5 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 21,354 vehicles a day, roughly 26% of them trucks, projected to reach 22,500 by 2042. The structure is 571 ft (174 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 (HWY001) NB
CrossesCoast Fk Willamette Rive
Location05.3MI N Cottage Grove
RouteInterstate 5
CountyLane County
StateOregon
Coordinates43.87674, -123.01309
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length571 ft (174 m)
Longest span141 ft (43 m)
Deck width45 ft (13.7 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic21,354 (2022)
Projected traffic22,500 by 2042
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 (HWY001) NB over Coast Fk Willamette Rive built?

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

What condition is I-5 (HWY001) NB over Coast Fk Willamette Rive 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 (HWY001) NB over Coast Fk Willamette Rive carry?

About 21,354 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is I-5 (HWY001) NB over Coast Fk Willamette Rive?

The structure is 571 ft (174 m) long with a longest span of 141 ft (43 m) and a deck 45 ft wide.

Who owns I-5 (HWY001) NB over Coast Fk Willamette Rive?

It is owned by the State Highway Agency.