US Bridges

Forest RD 42 over North Fork Crooked River

Fair

Crook County, Oregon · 19.2MI SE of 42 22 JCT · Structure no. 060701000001018

Built
1952
73 years old, rebuilt 1995
Condition
Fair
inspected October 2024
Type
Frame
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
100
1991 count
Owner
Federal
U.S. Forest Service

About this bridge

Forest RD 42 over North Fork Crooked River is a concrete continuous frame carrying Forest RD 42 over North Fork Crooked River in Crook County, Oregon. It was built in 1952 and reconstructed in 1995, so it is 73 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 100 vehicles a day, projected to reach 150 by 2045. The structure is 80 ft (24.4 m) long and 31 ft wide.

CarriesForest RD 42
CrossesNorth Fork Crooked River
Location19.2MI SE of 42 22 JCT
RouteFederal Lands Road 4200
StateOregon
Coordinates44.33611, -120.13722
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.1 US tons
Inventory rating27 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length80 ft (24.4 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1991)
Projected traffic150 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 42 over North Fork Crooked River built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1995.

What condition is Forest RD 42 over North Fork 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 October 2024.

How much traffic does Forest RD 42 over North Fork Crooked River carry?

About 100 vehicles per day (1991 count).

How long is Forest RD 42 over North Fork Crooked River?

The structure is 80 ft (24.4 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns Forest RD 42 over North Fork Crooked River?

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