US Bridges

I-105 (hwy 227) WB over I-5 (hwy 1)

Fair

Lane County, Oregon · 01.5 MI E Coburg R JCT · Structure no. 08689D227 00348

Built
1961
64 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
315 ft
5 main spans
Daily traffic
37,490
2022 count
Owner
State
State Highway Agency

About this bridge

I-105 (hwy 227) WB over I-5 (hwy 1) is a prestressed concrete stringer/multi-beam or girder carrying I-105 (hwy 227) WB over I-5 (hwy 1) in Lane County, Oregon. It was built in 1961, so it is 64 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 37,490 vehicles a day, roughly 4% of them trucks, projected to reach 41,300 by 2042. The structure is 315 ft (96 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-105 (hwy 227) WB
CrossesI-5 (hwy 1)
Location01.5 MI E Coburg R JCT
RouteInterstate 105
CountyLane County
StateOregon
Coordinates44.06373, -123.0492
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length315 ft (96 m)
Longest span74 ft (22.6 m)
Deck width49 ft (14.8 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,490 (2022)
Projected traffic41,300 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-105 (hwy 227) WB over I-5 (hwy 1) built?

It was built in 1961, making it 64 years old in 2025.

What condition is I-105 (hwy 227) WB over I-5 (hwy 1) 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-105 (hwy 227) WB over I-5 (hwy 1) carry?

About 37,490 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is I-105 (hwy 227) WB over I-5 (hwy 1)?

The structure is 315 ft (96 m) long with a longest span of 74 ft (22.6 m) and a deck 49 ft wide.

Who owns I-105 (hwy 227) WB over I-5 (hwy 1)?

It is owned by the State Highway Agency.