US Bridges

I-5 (hwy 001) NB over Brown Creek

Fair

Lane County, Oregon · 03.2 MI N Cottage Grove · Structure no. 07793A001 17789

Built
1956
69 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
19,034
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) NB over Brown Creek is a concrete continuous tee beam carrying I-5 (hwy 001) NB over Brown Creek in Lane County, Oregon. It was built in 1956, so it is 69 years old, older 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 80 ft (24.4 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-5 (hwy 001) NB
CrossesBrown Creek
Location03.2 MI N Cottage Grove
RouteInterstate 5
CountyLane County
StateOregon
Coordinates43.8474, -123.02249
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.
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating52 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span50 ft (15.2 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,034 (2022)
Projected traffic20,350 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) NB over Brown Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is I-5 (hwy 001) NB over Brown Creek 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 Brown Creek carry?

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

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

The structure is 80 ft (24.4 m) long with a longest span of 50 ft (15.2 m) and a deck 42 ft wide.

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

It is owned by the State Highway Agency.