Road over Delp CR

Fair

Lane County, Oregon · 21 E Fall CR Dam on Fs 18 · Structure no. 061806000001609

Built: 1955; 70 years old
Condition: Fair; inspected April 2024
Type: Frame; Concrete Continuous
Length: 90 ft; 3 main spans
Daily traffic: 10; 2006 count
Owner: Federal; U.S. Forest Service

About this bridge

Road over Delp CR is a concrete continuous frame carrying Road over Delp CR in Lane County, Oregon. It was built in 1955, so it is 70 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 10 vehicles a day, projected to reach 15 by 2045. The structure is 90 ft (27.4 m) long and 19 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

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CarriesRoad

CrossesDelp CR

Location21 E Fall CR Dam on Fs 18

RouteFederal Lands Road 18000

CountyLane County

StateOregon

Coordinates43.99204, -122.37599

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.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	6 Satisfactory	Structural elements show some minor deterioration.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionApril 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; action required to protect exposed foundations

Structural evaluation6: Equal to present minimum criteria

Deck geometry3: Basically intolerable, requiring high priority of corrective action

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating36 US tons

Inventory rating24 US tons

Structure

Structure typeFrame

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length90 ft (27.4 m)

Longest span55 ft (16.8 m)

Deck width19 ft (5.9 m)

Roadway width16 ft (4.9 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2006)

Projected traffic15 by 2045

Trucks—

Lanes on structure1

Traffic directionOne-lane bridge for two-way traffic

CarriesHighway

CrossesWaterway

Detour if closed620.7 mi (999 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 Delp CR built?

It was built in 1955, making it 70 years old in 2025.

What condition is Road over Delp CR 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 April 2024.

How much traffic does Road over Delp CR carry?

About 10 vehicles per day (2006 count).

How long is Road over Delp CR?

The structure is 90 ft (27.4 m) long with a longest span of 55 ft (16.8 m) and a deck 19 ft wide.

Who owns Road over Delp CR?

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