US Bridges

Barklow Mtn Road over S.Fk. Coquille River

Fair

Coos County, Oregon · 7 MI So of 97466 · Structure no. 061105000001113

Built
1947
78 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
245 ft
4 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Barklow Mtn Road over S.Fk. Coquille River is a steel stringer/multi-beam or girder carrying Barklow Mtn Road over S.Fk. Coquille River in Coos County, Oregon. It was built in 1947, so it is 78 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, projected to reach 75 by 2045. The structure is 245 ft (74.7 m) long and 17 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesBarklow Mtn Road
CrossesS.Fk. Coquille River
Location7 MI So of 97466
RouteFederal Lands Road 33530
CountyCoos County
StateOregon
Coordinates42.77861, -124.06775
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length245 ft (74.7 m)
Longest span90 ft (27.4 m)
Deck width17 ft (5.2 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Barklow Mtn Road over S.Fk. Coquille River built?

It was built in 1947, making it 78 years old in 2025.

What condition is Barklow Mtn Road over S.Fk. Coquille 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 August 2024.

How much traffic does Barklow Mtn Road over S.Fk. Coquille River carry?

About 50 vehicles per day (latest count).

How long is Barklow Mtn Road over S.Fk. Coquille River?

The structure is 245 ft (74.7 m) long with a longest span of 90 ft (27.4 m) and a deck 17 ft wide.

Who owns Barklow Mtn Road over S.Fk. Coquille River?

It is owned by the U.S. Forest Service.