US Bridges

County RD 756 over Jackson Cr/Jackson Resv

Good

Jackson County, Oregon · 0.75 Milepost · Structure no. 29C274756 00075

Built
1986
39 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
282
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 756 over Jackson Cr/Jackson Resv is a prestressed concrete slab carrying County RD 756 over Jackson Cr/Jackson Resv in Jackson County, Oregon. It was built in 1986, so it is 39 years old, younger 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 282 vehicles a day, roughly 10% of them trucks, projected to reach 328 by 2025. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCounty RD 756
CrossesJackson Cr/Jackson Resv
Location0.75 Milepost
RouteCounty Highway C0756
CountyJackson County
StateOregon
Coordinates42.31644, -122.99755
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
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating69 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic282 (2020)
Projected traffic328 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 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 756 over Jackson Cr/Jackson Resv built?

It was built in 1986, making it 39 years old in 2025.

What condition is County RD 756 over Jackson Cr/Jackson Resv 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 756 over Jackson Cr/Jackson Resv carry?

About 282 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 756 over Jackson Cr/Jackson Resv?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 24 ft wide.

Who owns County RD 756 over Jackson Cr/Jackson Resv?

It is owned by the County Highway Agency.