US Bridges

I-105 (hwy 227) EB over HWY 1W City Sts. & SPRR

Fair

Lane County, Oregon · SB or 99W JCT HWY 1W · Structure no. 09600E227 00026

Built
1973
52 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
1,212 ft
6 main spans
Daily traffic
27,236
2022 count
Owner
State
State Highway Agency

About this bridge

I-105 (hwy 227) EB over HWY 1W City Sts. & SPRR is a prestressed concrete continuous box beam or girders - multiple carrying I-105 (hwy 227) EB over HWY 1W City Sts. & SPRR in Lane County, Oregon. It was built in 1973, so it is 52 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 27,236 vehicles a day, roughly 4% of them trucks, projected to reach 29,650 by 2042. The structure is 1,212 ft (369.4 m) long and 39 ft wide.

Location

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CarriesI-105 (hwy 227) EB
CrossesHWY 1W City Sts. & SPRR
LocationSB or 99W JCT HWY 1W
RouteInterstate 105
CountyLane County
StateOregon
Coordinates44.05538, -123.10085
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating31.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6 (+3 approach)
Design loadHS 20
Structure length1,212 ft (369.4 m)
Longest span166 ft (50.6 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,236 (2022)
Projected traffic29,650 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$14.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-105 (hwy 227) EB over HWY 1W City Sts. & SPRR built?

It was built in 1973, making it 52 years old in 2025.

What condition is I-105 (hwy 227) EB over HWY 1W City Sts. & SPRR 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 October 2024.

How much traffic does I-105 (hwy 227) EB over HWY 1W City Sts. & SPRR carry?

About 27,236 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is I-105 (hwy 227) EB over HWY 1W City Sts. & SPRR?

The structure is 1,212 ft (369.4 m) long with a longest span of 166 ft (50.6 m) and a deck 39 ft wide.

Who owns I-105 (hwy 227) EB over HWY 1W City Sts. & SPRR?

It is owned by the State Highway Agency.