US Bridges

Logging Road over Green Peter Reservoir

Fair

Linn County, Oregon · Green Peter Dam · Structure no. CEPNPPOR000GP01

Built
1962
63 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
105 ft
2 main spans
Daily traffic
200
2011 count
Owner
Federal
Corps of Engineers (Civil)

About this bridge

Logging Road over Green Peter Reservoir is a prestressed concrete stringer/multi-beam or girder carrying Logging Road over Green Peter Reservoir in Linn County, Oregon. It was built in 1962, so it is 63 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 200 vehicles a day, roughly 30% of them trucks, projected to reach 200 by 2041. The structure is 105 ft (32 m) long and 28 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesLogging Road
CrossesGreen Peter Reservoir
LocationGreen Peter Dam
RouteState Highway 0
StateOregon
Coordinates44.44972, -122.54838
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length105 ft (32 m)
Longest span48 ft (14.5 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2011)
Projected traffic200 by 2041
Trucks30%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCorps of Engineers (Civil)
Maintained byCorps of Engineers (Civil)
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost$392,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Logging Road over Green Peter Reservoir built?

It was built in 1962, making it 63 years old in 2025.

What condition is Logging Road 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 May 2023.

How much traffic does Logging Road over Green Peter Reservoir carry?

About 200 vehicles per day (2011 count), of which roughly 30% are trucks.

How long is Logging Road over Green Peter Reservoir?

The structure is 105 ft (32 m) long with a longest span of 48 ft (14.5 m) and a deck 28 ft wide.

Who owns Logging Road over Green Peter Reservoir?

It is owned by the Corps of Engineers (Civil).