US Bridges

21 S 08 W 11.00: over Smith River

Good

Douglas County, Oregon · 51.7 Miles NE of HWY 101 · Structure no. 0000000L1439053

Built
1958
67 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete
Length
59 ft
3 main spans
Daily traffic
50
2023 count
Owner
Federal
Bureau of Land Management

About this bridge

21 S 08 W 11.00: over Smith River is a concrete slab carrying 21 S 08 W 11.00: over Smith River in Douglas County, Oregon. It was built in 1958, so it is 67 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2043. The structure is 59 ft (18 m) long and 16 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Carries21 S 08 W 11.00:
CrossesSmith River
Location51.7 Miles NE of HWY 101
RouteFederal Lands Road 0
StateOregon
Coordinates43.76056, -123.62028
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadOther
Structure length59 ft (18 m)
Longest span18 ft (5.5 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$4,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 21 S 08 W 11.00: over Smith River built?

It was built in 1958, making it 67 years old in 2025.

What condition is 21 S 08 W 11.00: over Smith River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does 21 S 08 W 11.00: over Smith River carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 21 S 08 W 11.00: over Smith River?

The structure is 59 ft (18 m) long with a longest span of 18 ft (5.5 m) and a deck 16 ft wide.

Who owns 21 S 08 W 11.00: over Smith River?

It is owned by the Bureau of Land Management.