US Bridges

31 S 12 W 03.00: over South Fork Coquille Rive

Fair

Coos County, Oregon · 15.5 Miles S of HWY 42 (m · Structure no. 0000000L1439030

Built
1961
64 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
235 ft
5 main spans
Daily traffic
50
2024 count
Owner
Federal
Bureau of Land Management

About this bridge

31 S 12 W 03.00: over South Fork Coquille Rive is a concrete continuous stringer/multi-beam or girder carrying 31 S 12 W 03.00: over South Fork Coquille Rive in Coos County, Oregon. It was built in 1961, so it is 64 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.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2044. The structure is 235 ft (71.6 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Carries31 S 12 W 03.00:
CrossesSouth Fork Coquille Rive
Location15.5 Miles S of HWY 42 (m
RouteFederal Lands Road 0
StateOregon
Coordinates42.90778, -124.11028
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating34.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length235 ft (71.6 m)
Longest span75 ft (22.9 m)
Deck width17 ft (5.3 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic75 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$45,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 31 S 12 W 03.00: over South Fork Coquille Rive built?

It was built in 1961, making it 64 years old in 2025.

What condition is 31 S 12 W 03.00: over South Fork Coquille Rive 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 2024.

How much traffic does 31 S 12 W 03.00: over South Fork Coquille Rive carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 31 S 12 W 03.00: over South Fork Coquille Rive?

The structure is 235 ft (71.6 m) long with a longest span of 75 ft (22.9 m) and a deck 17 ft wide.

Who owns 31 S 12 W 03.00: over South Fork Coquille Rive?

It is owned by the Bureau of Land Management.