US Bridges

Smith R RD #48 over Hudson Slough

Fair

Douglas County, Oregon · 3.5 MI NE of Reedsport · Structure no. 19C261 48 345

Built
1983
42 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
328 ft
4 main spans
Daily traffic
1,327
2020 count
Owner
County
County Highway Agency

About this bridge

Smith R RD #48 over Hudson Slough is a prestressed concrete stringer/multi-beam or girder carrying Smith R RD #48 over Hudson Slough in Douglas County, Oregon. It was built in 1983, so it is 42 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 1,327 vehicles a day, roughly 10% of them trucks, projected to reach 1,502 by 2025. The structure is 328 ft (100 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSmith R RD #48
CrossesHudson Slough
Location3.5 MI NE of Reedsport
RouteCounty Highway A0409
CountyDouglas County
StateOregon
Coordinates43.74204, -124.06229
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 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
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length328 ft (100 m)
Longest span81 ft (24.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,327 (2020)
Projected traffic1,502 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Smith R RD #48 over Hudson Slough built?

It was built in 1983, making it 42 years old in 2025.

What condition is Smith R RD #48 over Hudson 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 August 2024.

How much traffic does Smith R RD #48 over Hudson Slough carry?

About 1,327 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Smith R RD #48 over Hudson Slough?

The structure is 328 ft (100 m) long with a longest span of 81 ft (24.7 m) and a deck 34 ft wide.

Who owns Smith R RD #48 over Hudson Slough?

It is owned by the County Highway Agency.