US Bridges

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

Fair

Lane County, Oregon · 01.6 MI S Cottage Grove · Structure no. 20641 001 17162

Built
2008
17 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
220 ft
3 main spans
Daily traffic
14,334
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 2008, so it is 17 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 14,334 vehicles a day, roughly 26% of them trucks, projected to reach 16,050 by 2042. The structure is 220 ft (67.1 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-5 (hwy 001) SB
CrossesCoast Fk Willamette R
Location01.6 MI S Cottage Grove
RouteInterstate 5
CountyLane County
StateOregon
Coordinates43.766, -123.07179
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.
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 evaluation7: Better than 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 rating87.9 US tons
Inventory rating67.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length220 ft (67.1 m)
Longest span100 ft (30.5 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,334 (2022)
Projected traffic16,050 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 2008, making it 17 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 14,334 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 220 ft (67.1 m) long with a longest span of 100 ft (30.5 m) and a deck 45 ft wide.

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

It is owned by the State Highway Agency.