US Bridges

21 S 07 W 05.00: over Smith River

Fair

Douglas County, Oregon · 26.5 Miles NW of HWY 99 ( · Structure no. 0000000L1439261

Built
1966
59 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
143 ft
3 main spans
Daily traffic
25
2023 count
Owner
Federal
Bureau of Land Management

About this bridge

21 S 07 W 05.00: over Smith River is a prestressed concrete stringer/multi-beam or girder carrying 21 S 07 W 05.00: over Smith River in Douglas County, Oregon. It was built in 1966, so it is 59 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 6 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 35 by 2043. The structure is 143 ft (43.6 m) long and 16 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Carries21 S 07 W 05.00:
CrossesSmith River
Location26.5 Miles NW of HWY 99 (
RouteFederal Lands Road 0
StateOregon
Coordinates43.77081, -123.54779
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25.7 US tons
Inventory rating19.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span60 ft (18.3 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic35 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$2,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 21 S 07 W 05.00: over Smith River built?

It was built in 1966, making it 59 years old in 2025.

What condition is 21 S 07 W 05.00: 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 21 S 07 W 05.00: over Smith River carry?

About 25 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 21 S 07 W 05.00: over Smith River?

The structure is 143 ft (43.6 m) long with a longest span of 60 ft (18.3 m) and a deck 16 ft wide.

Who owns 21 S 07 W 05.00: over Smith River?

It is owned by the Bureau of Land Management.