US Bridges

County RD 797 over Copco Penstocks

FairPosted for load

Jackson County, Oregon · 4.33 Milepost · Structure no. 29C279797 00433

Built
1930
95 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
57 ft
3 main spans
Daily traffic
594
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 797 over Copco Penstocks is a concrete continuous tee beam carrying County RD 797 over Copco Penstocks in Jackson County, Oregon. It was built in 1930, so it is 95 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. Its operating status is: posted for load restriction.

It carries about 594 vehicles a day, roughly 10% of them trucks, projected to reach 691 by 2025. The structure is 57 ft (17.4 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCounty RD 797
CrossesCopco Penstocks
Location4.33 Milepost
RouteCounty Highway C0797
CountyJackson County
StateOregon
Coordinates42.73398, -122.5148
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.7 US tons
Inventory rating24.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length57 ft (17.4 m)
Longest span21 ft (6.4 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic594 (2020)
Projected traffic691 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 797 over Copco Penstocks built?

It was built in 1930, making it 95 years old in 2025.

What condition is County RD 797 over Copco Penstocks 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 June 2023.

How much traffic does County RD 797 over Copco Penstocks carry?

About 594 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 797 over Copco Penstocks?

The structure is 57 ft (17.4 m) long with a longest span of 21 ft (6.4 m) and a deck 28 ft wide.

Who owns County RD 797 over Copco Penstocks?

It is owned by the County Highway Agency.