US Bridges

Barklow Mtn Road over Johnson Creek

Good

Coos County, Oregon · 8MI S & 4MI W of 97466 · Structure no. 061105000001114

Built
1982
43 years old
Condition
Good
inspected July 2024
Type
Channel Beam
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
40
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Barklow Mtn Road over Johnson Creek is a prestressed concrete channel beam carrying Barklow Mtn Road over Johnson Creek in Coos County, Oregon. It was built in 1982, so it is 43 years old, younger 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 56 ft (17.2 m) long and 20 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesBarklow Mtn Road
CrossesJohnson Creek
Location8MI S & 4MI W of 97466
RouteFederal Lands Road 33530
StateOregon
Coordinates42.76267, -124.14303
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 protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating75.1 US tons
Inventory rating49.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length56 ft (17.2 m)
Longest span55 ft (16.8 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2006)
Projected traffic60 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 Johnson Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Barklow Mtn Road over Johnson Creek 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 July 2024.

How much traffic does Barklow Mtn Road over Johnson Creek carry?

About 40 vehicles per day (2006 count).

How long is Barklow Mtn Road over Johnson Creek?

The structure is 56 ft (17.2 m) long with a longest span of 55 ft (16.8 m) and a deck 20 ft wide.

Who owns Barklow Mtn Road over Johnson Creek?

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