US Bridges

I-5 (hwy 1) SB over Sodom Ditch

Fair

Linn County, Oregon · 177 MI N Lane-Linn Line · Structure no. 20397 001 22113

Built
2009
16 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
330 ft
3 main spans
Daily traffic
21,606
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 1) SB over Sodom Ditch is a prestressed concrete continuous box beam or girders - single or spread carrying I-5 (hwy 1) SB over Sodom Ditch in Linn County, Oregon. It was built in 2009, so it is 16 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 21,606 vehicles a day, roughly 25% of them trucks, projected to reach 24,900 by 2042. The structure is 330 ft (100.6 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5 (hwy 1) SB
CrossesSodom Ditch
Location177 MI N Lane-Linn Line
RouteInterstate 5
CountyLinn County
StateOregon
Coordinates44.45494, -123.06169
Functional classRural 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.6 US tons
Inventory rating68.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length330 ft (100.6 m)
Longest span120 ft (36.6 m)
Deck width63 ft (19.1 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,606 (2022)
Projected traffic24,900 by 2042
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 1) SB over Sodom Ditch built?

It was built in 2009, making it 16 years old in 2025.

What condition is I-5 (hwy 1) SB over Sodom Ditch 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 December 2024.

How much traffic does I-5 (hwy 1) SB over Sodom Ditch carry?

About 21,606 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is I-5 (hwy 1) SB over Sodom Ditch?

The structure is 330 ft (100.6 m) long with a longest span of 120 ft (36.6 m) and a deck 63 ft wide.

Who owns I-5 (hwy 1) SB over Sodom Ditch?

It is owned by the State Highway Agency.