US Bridges

13th ST East over Shelton Ditch

Fair

Marion County, Oregon · Parallel to 470414 · Structure no. 470415000 00000

Built
1975
50 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
111 ft
3 main spans
Daily traffic
19,501
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

13th ST East over Shelton Ditch is a concrete continuous tee beam carrying 13th ST East over Shelton Ditch in Marion County, Oregon. It was built in 1975, so it is 50 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 19,501 vehicles a day, roughly 10% of them trucks, projected to reach 26,884 by 2025. The structure is 111 ft (33.8 m) long and 37 ft wide.

Location

Open in Google Maps
Carries13th ST East
CrossesShelton Ditch
LocationParallel to 470414
RouteCity Street 0
CountyMarion County
StateOregon
Coordinates44.93105, -123.02871
Functional classUrban Other Principal Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length111 ft (33.8 m)
Longest span76 ft (23.2 m)
Deck width37 ft (11.4 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic19,501 (2020)
Projected traffic26,884 by 2025
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$594,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 13th ST East over Shelton Ditch built?

It was built in 1975, making it 50 years old in 2025.

What condition is 13th ST East over Shelton 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 August 2023.

How much traffic does 13th ST East over Shelton Ditch carry?

About 19,501 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 13th ST East over Shelton Ditch?

The structure is 111 ft (33.8 m) long with a longest span of 76 ft (23.2 m) and a deck 37 ft wide.

Who owns 13th ST East over Shelton Ditch?

It is owned by the City or Municipal Highway Agency.