Road over Blue River

Fair

Lane County, Oregon · 4.8 N of HWY 126 on Fs 15 · Structure no. 061801000001630

Built: 1955; 70 years old
Condition: Fair; inspected April 2021
Type: Frame; Concrete Continuous
Length: 150 ft; 3 main spans
Daily traffic: 50
Owner: Federal; U.S. Forest Service

About this bridge

Road over Blue River is a concrete continuous frame carrying Road over Blue River 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 150 ft (45.7 m) long and 17 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

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CarriesRoad

CrossesBlue River

Location4.8 N of HWY 126 on Fs 15

RouteFederal Lands Road 15000

CountyLane County

StateOregon

Coordinates44.2204, -122.26481

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	7 Good	Some minor problems.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionApril 2021

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour within limits of footing or piles

Structural evaluation6: Equal to present minimum criteria

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

Waterway adequacy9: Superior to present desirable criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating49.1 US tons

Inventory rating38 US tons

Structure

Structure typeFrame

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length150 ft (45.7 m)

Longest span65 ft (19.8 m)

Deck width17 ft (5.2 m)

Roadway width16 ft (4.9 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 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 Blue River built?

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

What condition is Road over Blue 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 April 2021.

How much traffic does Road over Blue River carry?

About 50 vehicles per day (latest count).

How long is Road over Blue River?

The structure is 150 ft (45.7 m) long with a longest span of 65 ft (19.8 m) and a deck 17 ft wide.

Who owns Road over Blue River?

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