US Bridges

Thompson Creek RD over Thompson Creek

Fair

Jackson County, Oregon · 5.7 MI S of FAP 8 JCT · Structure no. 29C223927 00570

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
437
2020 count
Owner
County
County Highway Agency

About this bridge

Thompson Creek RD over Thompson Creek is a prestressed concrete slab carrying Thompson Creek RD over Thompson Creek in Jackson County, Oregon. It was built in 1967, so it is 58 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 437 vehicles a day, roughly 10% of them trucks, projected to reach 512 by 2025. The structure is 34 ft (10.4 m) long and 30 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

CarriesThompson Creek RD
CrossesThompson Creek
Location5.7 MI S of FAP 8 JCT
RouteCounty Highway 0A340
StateOregon
Coordinates42.18598, -123.21903
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
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic437 (2020)
Projected traffic512 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 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 Thompson Creek RD over Thompson Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Thompson Creek RD over Thompson 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 Thompson Creek RD over Thompson Creek carry?

About 437 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Thompson Creek RD over Thompson Creek?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 30 ft wide.

Who owns Thompson Creek RD over Thompson Creek?

It is owned by the County Highway Agency.