US Bridges

High Banks Road over Whetstone CR

Fair

Jackson County, Oregon · 3.74 Milepost · Structure no. 29C32 562 00374

Built
1969
56 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
394
2020 count
Owner
County
County Highway Agency

About this bridge

High Banks Road over Whetstone CR is a prestressed concrete slab carrying High Banks Road over Whetstone CR in Jackson County, Oregon. It was built in 1969, so it is 56 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 394 vehicles a day, roughly 60% of them trucks, projected to reach 459 by 2025. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHigh Banks Road
CrossesWhetstone CR
Location3.74 Milepost
RouteCounty Highway C0562
StateOregon
Coordinates42.43404, -122.93098
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 inspectionJuly 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic394 (2020)
Projected traffic459 by 2025
Trucks60%
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 High Banks Road over Whetstone CR built?

It was built in 1969, making it 56 years old in 2025.

What condition is High Banks Road over Whetstone CR 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 July 2023.

How much traffic does High Banks Road over Whetstone CR carry?

About 394 vehicles per day (2020 count), of which roughly 60% are trucks.

How long is High Banks Road over Whetstone CR?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.

Who owns High Banks Road over Whetstone CR?

It is owned by the County Highway Agency.