US Bridges

County RD 790 over Little Applegate River

Fair

Jackson County, Oregon · 0.08 Milepost · Structure no. 29C153790 00008

Built
1955
70 years old, rebuilt 1974
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
51 ft
1 main span
Daily traffic
208
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 790 over Little Applegate River is a wood or timber stringer/multi-beam or girder carrying County RD 790 over Little Applegate River in Jackson County, Oregon. It was built in 1955 and reconstructed in 1974, so it is 70 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 5 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 208 vehicles a day, roughly 10% of them trucks, projected to reach 243 by 2025. The structure is 51 ft (15.5 m) long and 22 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesCounty RD 790
CrossesLittle Applegate River
Location0.08 Milepost
RouteCounty Highway C0790
StateOregon
Coordinates42.14751, -122.95358
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length51 ft (15.5 m)
Longest span49 ft (14.9 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic208 (2020)
Projected traffic243 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 790 over Little Applegate River built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1974.

What condition is County RD 790 over Little Applegate River 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 790 over Little Applegate River carry?

About 208 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 790 over Little Applegate River?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.9 m) and a deck 22 ft wide.

Who owns County RD 790 over Little Applegate River?

It is owned by the County Highway Agency.