US Bridges

I-105 (hwy 227)CON over Jefferson Street

Fair

Lane County, Oregon · S99W JCT HWY 1W · Structure no. 09600C227C00022

Built
1973
52 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
305 ft
3 main spans
Daily traffic
16,800
2017 count
Owner
State
State Highway Agency

About this bridge

I-105 (hwy 227)CON over Jefferson Street is a prestressed concrete continuous box beam or girders - multiple carrying I-105 (hwy 227)CON over Jefferson Street 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 16,800 vehicles a day, roughly 3% of them trucks, projected to reach 18,700 by 2030. The structure is 305 ft (93 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI-105 (hwy 227)CON
CrossesJefferson Street
LocationS99W JCT HWY 1W
RouteInterstate 105
CountyLane County
StateOregon
Coordinates44.054, -123.1018
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length305 ft (93 m)
Longest span125 ft (38.1 m)
Deck width30 ft (9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,800 (2017)
Projected traffic18,700 by 2030
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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$1.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-105 (hwy 227)CON over Jefferson Street built?

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

What condition is I-105 (hwy 227)CON over Jefferson Street 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)CON over Jefferson Street carry?

About 16,800 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is I-105 (hwy 227)CON over Jefferson Street?

The structure is 305 ft (93 m) long with a longest span of 125 ft (38.1 m) and a deck 30 ft wide.

Who owns I-105 (hwy 227)CON over Jefferson Street?

It is owned by the State Highway Agency.