US Bridges

I-5 (hwy 001) SB over Coast Fk Willamette R

Fair

Lane County, Oregon · 05.3 MI N Cottage Grove · Structure no. 19237 001 17999

Built
2003
22 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
568 ft
5 main spans
Daily traffic
21,354
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) SB over Coast Fk Willamette R is a prestressed concrete continuous stringer/multi-beam or girder carrying I-5 (hwy 001) SB over Coast Fk Willamette R in Lane County, Oregon. It was built in 2003, so it is 22 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 21,354 vehicles a day, roughly 26% of them trucks, projected to reach 22,500 by 2042. The structure is 568 ft (173 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5 (hwy 001) SB
CrossesCoast Fk Willamette R
Location05.3 MI N Cottage Grove
RouteInterstate 5
CountyLane County
StateOregon
Coordinates43.87651, -123.01335
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length568 ft (173 m)
Longest span138 ft (42 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

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 (hwy 001) SB over Coast Fk Willamette R built?

It was built in 2003, making it 22 years old in 2025.

What condition is I-5 (hwy 001) SB over Coast Fk Willamette R 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) SB over Coast Fk Willamette R carry?

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

How long is I-5 (hwy 001) SB over Coast Fk Willamette R?

The structure is 568 ft (173 m) long with a longest span of 138 ft (42 m) and a deck 44 ft wide.

Who owns I-5 (hwy 001) SB over Coast Fk Willamette R?

It is owned by the State Highway Agency.