US Bridges

Table Rock RD over Whetstone Creek

Fair

Jackson County, Oregon · 5.0 MI N of HWY 99 JCT · Structure no. 29C147778 00521

Built
1942
83 years old, rebuilt 1984
Condition
Fair
inspected June 2023
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
12,446
2020 count
Owner
County
County Highway Agency

About this bridge

Table Rock RD over Whetstone Creek is a concrete continuous culvert carrying Table Rock RD over Whetstone Creek in Jackson County, Oregon. It was built in 1942 and reconstructed in 1984, so it is 83 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.

It carries about 12,446 vehicles a day, roughly 1% of them trucks, projected to reach 13,196 by 2025. The structure is 31 ft (9.6 m) long and 38 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesTable Rock RD
CrossesWhetstone Creek
Location5.0 MI N of HWY 99 JCT
RouteCounty Highway 0A363
StateOregon
Coordinates42.4207, -122.8854
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.6 m)
Longest span16 ft (4.9 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,446 (2020)
Projected traffic13,196 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Table Rock RD over Whetstone Creek built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1984.

What condition is Table Rock RD over Whetstone Creek 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 Table Rock RD over Whetstone Creek carry?

About 12,446 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Table Rock RD over Whetstone Creek?

The structure is 31 ft (9.6 m) long with a longest span of 16 ft (4.9 m) and a deck 38 ft wide.

Who owns Table Rock RD over Whetstone Creek?

It is owned by the County Highway Agency.