US Bridges

20 S 07 W 27.00: over Smith River

Good

Douglas County, Oregon · 25.5 Miles NW of HWY 99 ( · Structure no. 0000000L1439256

Built
1963
62 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
122 ft
3 main spans
Daily traffic
25
2023 count
Owner
Federal
Bureau of Land Management

About this bridge

20 S 07 W 27.00: over Smith River is a prestressed concrete stringer/multi-beam or girder carrying 20 S 07 W 27.00: over Smith River in Douglas County, Oregon. It was built in 1963, so it is 62 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2043. The structure is 122 ft (37.2 m) long and 29 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Carries20 S 07 W 27.00:
CrossesSmith River
Location25.5 Miles NW of HWY 99 (
RouteFederal Lands Road 0
StateOregon
Coordinates43.77972, -123.54972
Functional classRural Minor Collector

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 inspectionApril 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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span50 ft (15.2 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic40 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-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 20 S 07 W 27.00: over Smith River built?

It was built in 1963, making it 62 years old in 2025.

What condition is 20 S 07 W 27.00: 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 April 2023.

How much traffic does 20 S 07 W 27.00: over Smith River carry?

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

How long is 20 S 07 W 27.00: over Smith River?

The structure is 122 ft (37.2 m) long with a longest span of 50 ft (15.2 m) and a deck 29 ft wide.

Who owns 20 S 07 W 27.00: over Smith River?

It is owned by the Bureau of Land Management.