US Bridges

Southside Road over Smith River

Fair

Douglas County, Oregon · 4.0 MI NE of Reedsport · Structure no. 19C509 195 001

Built
1975
50 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
562 ft
4 main spans
Daily traffic
320
2020 count
Owner
County
County Highway Agency

About this bridge

Southside Road over Smith River is a steel continuous stringer/multi-beam or girder carrying Southside Road over Smith River in Douglas County, Oregon. It was built in 1975, so it is 50 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 320 vehicles a day, roughly 5% of them trucks, projected to reach 360 by 2025. The structure is 562 ft (171.3 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSouthside Road
CrossesSmith River
Location4.0 MI NE of Reedsport
RouteCounty Highway C0195
CountyDouglas County
StateOregon
Coordinates43.73851, -124.06372
Functional classRural Minor 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 alignment6: Equal to present minimum criteria
Operating rating37.8 US tons
Inventory rating22.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+3 approach)
Design loadHS 20
Structure length562 ft (171.3 m)
Longest span180 ft (54.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2020)
Projected traffic360 by 2025
Trucks5%
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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Southside Road over Smith River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Southside Road over Smith 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 Southside Road over Smith River carry?

About 320 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Southside Road over Smith River?

The structure is 562 ft (171.3 m) long with a longest span of 180 ft (54.9 m) and a deck 26 ft wide.

Who owns Southside Road over Smith River?

It is owned by the County Highway Agency.