US Bridges

20 S 06 W 33.00: over Smith River

Fair

Douglas County, Oregon · 12.7 Miles NW of HWY 99 ( · Structure no. 0000000L1439254

Built
1962
63 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
30 ft
2 main spans
Daily traffic
5
2023 count
Owner
Federal
Bureau of Land Management

About this bridge

20 S 06 W 33.00: over Smith River is a concrete stringer/multi-beam or girder carrying 20 S 06 W 33.00: over Smith River in Douglas County, Oregon. It was built in 1962, so it is 63 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: open, posting recommended but not legally implemented.

It carries about 5 vehicles a day, roughly 10% of them trucks, projected to reach 8 by 2043. The structure is 30 ft (9.1 m) long and 15 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Carries20 S 06 W 33.00:
CrossesSmith River
Location12.7 Miles NW of HWY 99 (
RouteFederal Lands Road 0
StateOregon
Coordinates43.78028, -123.40778
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
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 geometry7: Better than present minimum criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28 US tons
Inventory rating21.5 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span14 ft (4.2 m)
Deck width15 ft (4.6 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2023)
Projected traffic8 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Land Management
Maintained byBureau of Land Management
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost$16,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 20 S 06 W 33.00: over Smith River built?

It was built in 1962, making it 63 years old in 2025.

What condition is 20 S 06 W 33.00: 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 April 2023.

How much traffic does 20 S 06 W 33.00: over Smith River carry?

About 5 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 20 S 06 W 33.00: over Smith River?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.2 m) and a deck 15 ft wide.

Who owns 20 S 06 W 33.00: over Smith River?

It is owned by the Bureau of Land Management.