US Bridges

Slate CR Road over Slate Creek

Fair

Josephine County, Oregon · 5MI S & 13MI W of 97523 · Structure no. 061102000001131

Built
1954
71 years old, rebuilt 2003
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
61 ft
3 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Slate CR Road over Slate Creek is a wood or timber stringer/multi-beam or girder carrying Slate CR Road over Slate Creek in Josephine County, Oregon. It was built in 1954 and reconstructed in 2003, so it is 71 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 61 ft (18.6 m) long and 17 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

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CarriesSlate CR Road
CrossesSlate Creek
Location5MI S & 13MI W of 97523
RouteFederal Lands Road 21000
CountyJosephine County
StateOregon
Coordinates42.37048, -123.58567
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating37.8 US tons
Inventory rating29.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 20
Structure length61 ft (18.6 m)
Longest span39 ft (11.9 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 Slate CR Road over Slate Creek built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2003.

What condition is Slate CR Road over Slate Creek 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 June 2023.

How much traffic does Slate CR Road over Slate Creek carry?

About 50 vehicles per day (latest count).

How long is Slate CR Road over Slate Creek?

The structure is 61 ft (18.6 m) long with a longest span of 39 ft (11.9 m) and a deck 17 ft wide.

Who owns Slate CR Road over Slate Creek?

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