US Bridges

I-5 (hwy 001) NB over Cow Creek

Good

Douglas County, Oregon · MP 86.52 · Structure no. 19106 001 08652

Built
2006
19 years old
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
262 ft
2 main spans
Daily traffic
10,270
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) NB over Cow Creek is a prestressed concrete continuous box beam or girders - multiple carrying I-5 (hwy 001) NB over Cow Creek in Douglas County, Oregon. It was built in 2006, so it is 19 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,270 vehicles a day, roughly 13% of them trucks, projected to reach 11,600 by 2042. The structure is 262 ft (80 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) NB
CrossesCow Creek
LocationMP 86.52
RouteInterstate 5
CountyDouglas County
StateOregon
Coordinates42.78084, -123.27207
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.8 US tons
Inventory rating16.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length262 ft (80 m)
Longest span131 ft (40 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,270 (2022)
Projected traffic11,600 by 2042
Trucks13%
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) NB over Cow Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is I-5 (hwy 001) NB over Cow Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

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

About 10,270 vehicles per day (2022 count), of which roughly 13% are trucks.

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

The structure is 262 ft (80 m) long with a longest span of 131 ft (40 m) and a deck 44 ft wide.

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

It is owned by the State Highway Agency.