Road over Quartz CR

Fair

Lane County, Oregon · 4.9 SE JCT Hy 126-FS 2618 · Structure no. 061801000001356

Built: 1975; 50 years old
Condition: Fair; inspected May 2024
Type: Slab; Prestressed Concrete
Length: 88 ft; 1 main span
Daily traffic: 75
Owner: Federal; U.S. Forest Service

About this bridge

Road over Quartz CR is a prestressed concrete slab carrying Road over Quartz CR in Lane County, Oregon. It was built in 1975, so it is 50 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 75 vehicles a day, projected to reach 112 by 2045. The structure is 88 ft (26.8 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

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CarriesRoad

CrossesQuartz CR

Location4.9 SE JCT Hy 126-FS 2618

RouteFederal Lands Road 26180

CountyLane County

StateOregon

Coordinates44.08185, -122.32731

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

Last inspectionMay 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Deck geometry6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating100.1 US tons

Inventory rating49.1 US tons

Structure

Structure typeSlab

MaterialPrestressed Concrete

DeckOther

Main spans1

Design loadHS 20

Structure length88 ft (26.8 m)

Longest span86 ft (26.2 m)

Deck width16 ft (4.9 m)

Roadway width14 ft (4.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (—)

Projected traffic112 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 Quartz CR built?

It was built in 1975, making it 50 years old in 2025.

What condition is Road over Quartz 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 May 2024.

How much traffic does Road over Quartz CR carry?

About 75 vehicles per day (latest count).

How long is Road over Quartz CR?

The structure is 88 ft (26.8 m) long with a longest span of 86 ft (26.2 m) and a deck 16 ft wide.

Who owns Road over Quartz CR?

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