US Bridges

Forest RD 1600 over Crooked River

Fair

Crook County, Oregon · On RD16 8.13MI from Post · Structure no. 060703000001019

Built
1965
60 years old, rebuilt 1995
Condition
Fair
inspected December 2024
Type
Frame
Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
25
1993 count
Owner
Federal
U.S. Forest Service

About this bridge

Forest RD 1600 over Crooked River is a concrete continuous frame carrying Forest RD 1600 over Crooked River in Crook County, Oregon. It was built in 1965 and reconstructed in 1995, so it is 60 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 25 vehicles a day, projected to reach 37 by 2045. The structure is 120 ft (36.6 m) long and 29 ft wide.

Location

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CarriesForest RD 1600
CrossesCrooked River
LocationOn RD16 8.13MI from Post
RouteFederal Lands Road 1600
CountyCrook County
StateOregon
Coordinates44.1251, -120.33855
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.8 US tons
Inventory rating16.8 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length120 ft (36.6 m)
Longest span80 ft (24.4 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (1993)
Projected traffic37 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest RD 1600 over Crooked River built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1995.

What condition is Forest RD 1600 over Crooked 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 December 2024.

How much traffic does Forest RD 1600 over Crooked River carry?

About 25 vehicles per day (1993 count).

How long is Forest RD 1600 over Crooked River?

The structure is 120 ft (36.6 m) long with a longest span of 80 ft (24.4 m) and a deck 29 ft wide.

Who owns Forest RD 1600 over Crooked River?

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