US Bridges

I-5 (hwy 001) SB over HWY 018 (or 58) & Conn

Fair

Lane County, Oregon · 034 MI S of Eugene Scl · Structure no. 20487 001 18834

Built
2008
17 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
132 ft
1 main span
Daily traffic
28,339
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) SB over HWY 018 (or 58) & Conn is a prestressed concrete stringer/multi-beam or girder carrying I-5 (hwy 001) SB over HWY 018 (or 58) & Conn 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 28,339 vehicles a day, roughly 17% of them trucks, projected to reach 37,700 by 2042. The structure is 132 ft (40.2 m) long and 71 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesI-5 (hwy 001) SB
CrossesHWY 018 (or 58) & Conn
Location034 MI S of Eugene Scl
RouteInterstate 5
CountyLane County
StateOregon
Coordinates43.99683, -123.00647
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.4 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length132 ft (40.2 m)
Longest span132 ft (40.2 m)
Deck width71 ft (21.5 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,339 (2022)
Projected traffic37,700 by 2042
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 (hwy 001) SB over HWY 018 (or 58) & Conn built?

It was built in 2008, making it 17 years old in 2025.

What condition is I-5 (hwy 001) SB over HWY 018 (or 58) & Conn 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 HWY 018 (or 58) & Conn carry?

About 28,339 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is I-5 (hwy 001) SB over HWY 018 (or 58) & Conn?

The structure is 132 ft (40.2 m) long with a longest span of 132 ft (40.2 m) and a deck 71 ft wide.

Who owns I-5 (hwy 001) SB over HWY 018 (or 58) & Conn?

It is owned by the State Highway Agency.