US Bridges

I-5 (hwy 001) SB over Mckenzie Oflow

Fair

Lane County, Oregon · 037 MI N of Eugene Ncl · Structure no. 08178S001 19669

Built
1960
65 years old, rebuilt 1987
Condition
Fair
inspected March 2023
Type
Tee Beam
Concrete Continuous
Length
162 ft
4 main spans
Daily traffic
23,236
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) SB over Mckenzie Oflow is a concrete continuous tee beam carrying I-5 (hwy 001) SB over Mckenzie Oflow in Lane County, Oregon. It was built in 1960 and reconstructed in 1987, so it is 65 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 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 23,236 vehicles a day, roughly 25% of them trucks, projected to reach 30,600 by 2042. The structure is 162 ft (49.4 m) long and 43 ft wide. If it were closed, the detour would be 47.2 mi (76 km).

Location

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CarriesI-5 (hwy 001) SB
CrossesMckenzie Oflow
Location037 MI N of Eugene Ncl
RouteInterstate 5
CountyLane County
StateOregon
Coordinates44.10201, -123.04474
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating19.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length162 ft (49.4 m)
Longest span42 ft (12.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,236 (2022)
Projected traffic30,600 by 2042
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed47.2 mi (76 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 Mckenzie Oflow built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1987.

What condition is I-5 (hwy 001) SB over Mckenzie Oflow 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 March 2023.

How much traffic does I-5 (hwy 001) SB over Mckenzie Oflow carry?

About 23,236 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is I-5 (hwy 001) SB over Mckenzie Oflow?

The structure is 162 ft (49.4 m) long with a longest span of 42 ft (12.8 m) and a deck 43 ft wide.

Who owns I-5 (hwy 001) SB over Mckenzie Oflow?

It is owned by the State Highway Agency.