US Bridges

Forest RD 42 over North Fork Crooked River

Good

Crook County, Oregon · 14.2MI FR 42 22 JCT on 42 · Structure no. 060701000001020

Built
1983
42 years old, rebuilt 1995
Condition
Good
inspected November 2021
Type
Slab
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
80
1991 count
Owner
Federal
U.S. Forest Service

About this bridge

Forest RD 42 over North Fork Crooked River is a prestressed concrete slab carrying Forest RD 42 over North Fork Crooked River in Crook County, Oregon. It was built in 1983 and reconstructed in 1995, so it is 42 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 80 vehicles a day, projected to reach 120 by 2045. The structure is 56 ft (17.2 m) long and 29 ft wide.

CarriesForest RD 42
CrossesNorth Fork Crooked River
Location14.2MI FR 42 22 JCT on 42
RouteFederal Lands Road 4200
StateOregon
Coordinates44.32694, -120.23417
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 protection7 GoodSome minor problems.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72.1 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length56 ft (17.2 m)
Longest span55 ft (16.8 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (1991)
Projected traffic120 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 1983, making it 42 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 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 November 2021.

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

About 80 vehicles per day (1991 count).

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

The structure is 56 ft (17.2 m) long with a longest span of 55 ft (16.8 m) and a deck 29 ft wide.

Who owns Forest RD 42 over North Fork Crooked River?

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