US Bridges

Smith Road over Little Luckiamute River

Fair

Polk County, Oregon · 003 MI North of CO RD 15 · Structure no. 53C041851500311

Built
1981
44 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
102 ft
3 main spans
Daily traffic
67
2020 count
Owner
County
County Highway Agency

About this bridge

Smith Road over Little Luckiamute River is a prestressed concrete slab carrying Smith Road over Little Luckiamute River in Polk County, Oregon. It was built in 1981, so it is 44 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 67 vehicles a day, roughly 10% of them trucks, projected to reach 112 by 2040. The structure is 102 ft (31.1 m) long and 28 ft wide. If it were closed, the detour would be 9.3 mi (15 km).

CarriesSmith Road
CrossesLittle Luckiamute River
Location003 MI North of CO RD 15
RouteCounty Highway 0
StateOregon
Coordinates44.79886, -123.31486
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating46 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67 (2020)
Projected traffic112 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.3 mi (15 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 Smith Road over Little Luckiamute River built?

It was built in 1981, making it 44 years old in 2025.

What condition is Smith Road over Little Luckiamute River 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 Smith Road over Little Luckiamute River carry?

About 67 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Smith Road over Little Luckiamute River?

The structure is 102 ft (31.1 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns Smith Road over Little Luckiamute River?

It is owned by the County Highway Agency.