US Bridges

Road over Jack Creek

Fair

Klamath County, Oregon · (orig.# 283 - 18.2) · Structure no. 062001000001001

Built
1975
50 years old, rebuilt 2000
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
13
Owner
Federal
U.S. Forest Service

About this bridge

Road over Jack Creek is a prestressed concrete slab carrying Road over Jack Creek in Klamath County, Oregon. It was built in 1975 and reconstructed in 2000, so it is 50 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 13 vehicles a day, projected to reach 19 by 2045. The structure is 31 ft (9.6 m) long and 35 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesRoad
CrossesJack Creek
Location(orig.# 283 - 18.2)
RouteFederal Lands Road 83000
StateOregon
Coordinates43.11328, -121.51075
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.1 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length31 ft (9.6 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13 (—)
Projected traffic19 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 Road over Jack Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2000.

What condition is Road over Jack 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 August 2024.

How much traffic does Road over Jack Creek carry?

About 13 vehicles per day (latest count).

How long is Road over Jack Creek?

The structure is 31 ft (9.6 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns Road over Jack Creek?

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