US Bridges

Quartzville DR over Green Peter Reservoir

Fair

Linn County, Oregon · 030 MI NE Green Peter Dam · Structure no. 12911 091201280

Built
1963
62 years old
Condition
Fair
inspected August 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
578 ft
3 main spans
Daily traffic
180
2021 count
Owner
County
County Highway Agency

About this bridge

Quartzville DR over Green Peter Reservoir is a steel continuous girder and floorbeam system carrying Quartzville DR over Green Peter Reservoir in Linn County, Oregon. It was built in 1963, so it is 62 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 180 vehicles a day, roughly 15% of them trucks, projected to reach 258 by 2041. The structure is 578 ft (176.2 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesQuartzville DR
CrossesGreen Peter Reservoir
Location030 MI NE Green Peter Dam
RouteCounty Highway A0484
CountyLinn County
StateOregon
Coordinates44.48797, -122.50978
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment6: Equal to present minimum criteria
Operating rating26.1 US tons
Inventory rating20 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length578 ft (176.2 m)
Longest span172 ft (52.4 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2021)
Projected traffic258 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Quartzville DR over Green Peter Reservoir built?

It was built in 1963, making it 62 years old in 2025.

What condition is Quartzville DR over Green Peter Reservoir 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 August 2023.

How much traffic does Quartzville DR over Green Peter Reservoir carry?

About 180 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Quartzville DR over Green Peter Reservoir?

The structure is 578 ft (176.2 m) long with a longest span of 172 ft (52.4 m) and a deck 30 ft wide.

Who owns Quartzville DR over Green Peter Reservoir?

It is owned by the County Highway Agency.