US Bridges

County RD 23 over Lone Tree/Catching Sloug

Fair

Coos County, Oregon · 005 MI No Sumner Store · Structure no. 016682002300662

Built
1986
39 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
86 ft
2 main spans
Daily traffic
351
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 23 over Lone Tree/Catching Sloug is a concrete continuous slab carrying County RD 23 over Lone Tree/Catching Sloug in Coos County, Oregon. It was built in 1986, so it is 39 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 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 351 vehicles a day, roughly 10% of them trucks, projected to reach 396 by 2025. The structure is 86 ft (26.2 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty RD 23
CrossesLone Tree/Catching Sloug
Location005 MI No Sumner Store
RouteCounty Highway A4310
CountyCoos County
StateOregon
Coordinates43.28855, -124.14825
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span42 ft (12.8 m)
Deck width35 ft (10.8 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic351 (2020)
Projected traffic396 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 County RD 23 over Lone Tree/Catching Sloug built?

It was built in 1986, making it 39 years old in 2025.

What condition is County RD 23 over Lone Tree/Catching Sloug 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 September 2024.

How much traffic does County RD 23 over Lone Tree/Catching Sloug carry?

About 351 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 23 over Lone Tree/Catching Sloug?

The structure is 86 ft (26.2 m) long with a longest span of 42 ft (12.8 m) and a deck 35 ft wide.

Who owns County RD 23 over Lone Tree/Catching Sloug?

It is owned by the County Highway Agency.