US Bridges

RD 3380 over Dry Creek

Fair

Crook County, Oregon · 0.1 M SW from JCT W/3370 · Structure no. 060703000001066

Built
1998
27 years old
Condition
Fair
inspected October 2024
Type
Truss - Thru
Steel
Length
41 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

RD 3380 over Dry Creek is a steel truss - thru carrying RD 3380 over Dry Creek in Crook County, Oregon. It was built in 1998, so it is 27 years old, younger 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 5 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 41 ft (12.5 m) long and 14 ft wide.

CarriesRD 3380
CrossesDry Creek
Location0.1 M SW from JCT W/3370
RouteFederal Lands Road 33800
StateOregon
Coordinates44.39071, -120.66426
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating45 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span41 ft (12.4 m)
Deck width14 ft (4.2 m)
Roadway width13 ft (4.1 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 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was RD 3380 over Dry Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is RD 3380 over Dry 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 October 2024.

How much traffic does RD 3380 over Dry Creek carry?

About 50 vehicles per day (latest count).

How long is RD 3380 over Dry Creek?

The structure is 41 ft (12.5 m) long with a longest span of 41 ft (12.4 m) and a deck 14 ft wide.

Who owns RD 3380 over Dry Creek?

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