US Bridges

Radiant Drive N.E. over Labish Ditch

Fair

Marion County, Oregon · 00.9 MI N of Chemawa RD · Structure no. 47C55 000

Built
1973
52 years old
Condition
Fair
inspected August 2024
Type
Slab
Wood or Timber
Length
25 ft
1 main span
Daily traffic
771
2020 count
Owner
County
County Highway Agency

About this bridge

Radiant Drive N.E. over Labish Ditch is a wood or timber slab carrying Radiant Drive N.E. over Labish Ditch in Marion 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 771 vehicles a day, roughly 10% of them trucks, projected to reach 866 by 2025. The structure is 25 ft (7.6 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRadiant Drive N.E.
CrossesLabish Ditch
Location00.9 MI N of Chemawa RD
RouteCity Street C0000
CountyMarion County
StateOregon
Coordinates45.01671, -122.99121
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.5 US tons
Inventory rating33.6 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width27 ft (8.2 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic771 (2020)
Projected traffic866 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Radiant Drive N.E. over Labish Ditch built?

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

What condition is Radiant Drive N.E. over Labish 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 2024.

How much traffic does Radiant Drive N.E. over Labish Ditch carry?

About 771 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Radiant Drive N.E. over Labish Ditch?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 27 ft wide.

Who owns Radiant Drive N.E. over Labish Ditch?

It is owned by the County Highway Agency.