US Bridges

County RD 59 over Catching Slough

FairPosted for load

Coos County, Oregon · 100 Ft West Sumner Store · Structure no. 6C117 059 00454

Built
1974
51 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
598
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 59 over Catching Slough is a prestressed concrete slab carrying County RD 59 over Catching Slough in Coos County, Oregon. It was built in 1974, so it is 51 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. Its operating status is: posted for load restriction.

It carries about 598 vehicles a day, roughly 10% of them trucks, projected to reach 678 by 2025. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCounty RD 59
CrossesCatching Slough
Location100 Ft West Sumner Store
RouteCounty Highway 0A396
CountyCoos County
StateOregon
Coordinates43.28277, -124.15207
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.8 US tons
Inventory rating17.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic598 (2020)
Projected traffic678 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 59 over Catching Slough built?

It was built in 1974, making it 51 years old in 2025.

What condition is County RD 59 over Catching Slough 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 59 over Catching Slough carry?

About 598 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 59 over Catching Slough?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 28 ft wide.

Who owns County RD 59 over Catching Slough?

It is owned by the County Highway Agency.