US Bridges

County RD 797 over North Fork Rogue River

Good

Jackson County, Oregon · 5.75 Milepost · Structure no. 29C281797 00575

Built
1930
95 years old
Condition
Good
inspected June 2023
Type
Arch - Deck
Concrete
Length
103 ft
1 main span
Daily traffic
1,060
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 797 over North Fork Rogue River is a concrete arch - deck carrying County RD 797 over North Fork Rogue River 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,060 vehicles a day, roughly 10% of them trucks, projected to reach 1,240 by 2025. The structure is 103 ft (31.4 m) long and 28 ft wide.

CarriesCounty RD 797
CrossesNorth Fork Rogue River
Location5.75 Milepost
RouteCounty Highway C0797
StateOregon
Coordinates42.74572, -122.49561
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating23.3 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length103 ft (31.4 m)
Longest span71 ft (21.6 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,060 (2020)
Projected traffic1,240 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$528,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 797 over North Fork Rogue River built?

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

What condition is County RD 797 over North Fork Rogue River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does County RD 797 over North Fork Rogue River carry?

About 1,060 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 797 over North Fork Rogue River?

The structure is 103 ft (31.4 m) long with a longest span of 71 ft (21.6 m) and a deck 28 ft wide.

Who owns County RD 797 over North Fork Rogue River?

It is owned by the County Highway Agency.