US Bridges

S Century DR over Little Deschutes River

Fair

Deschutes County, Oregon · 0.36MI West Hunnington RD · Structure no. 16061 E20202266

Built
1973
52 years old
Condition
Fair
inspected March 2024
Type
Slab
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
5,808
2020 count
Owner
County
County Highway Agency

About this bridge

S Century DR over Little Deschutes River is a prestressed concrete slab carrying S Century DR over Little Deschutes River in Deschutes 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 5 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 5,808 vehicles a day, roughly 8% of them trucks, projected to reach 6,558 by 2025. The structure is 100 ft (30.5 m) long and 44 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesS Century DR
CrossesLittle Deschutes River
Location0.36MI West Hunnington RD
RouteCounty Highway 4112
StateOregon
Coordinates43.82041, -121.4513
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89 US tons
Inventory rating68.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span52 ft (15.9 m)
Deck width44 ft (13.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,808 (2020)
Projected traffic6,558 by 2025
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 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 S Century DR over Little Deschutes River built?

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

What condition is S Century DR over Little Deschutes 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 March 2024.

How much traffic does S Century DR over Little Deschutes River carry?

About 5,808 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is S Century DR over Little Deschutes River?

The structure is 100 ft (30.5 m) long with a longest span of 52 ft (15.9 m) and a deck 44 ft wide.

Who owns S Century DR over Little Deschutes River?

It is owned by the County Highway Agency.