US Bridges

1-10 over Lower Thomas Creek

Fair

Lake County, Oregon · 1.45 MI West of Lakeview · Structure no. 37C0131-1000145

Built
1967
58 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
396
2020 count
Owner
County
County Highway Agency

About this bridge

1-10 over Lower Thomas Creek is a prestressed concrete slab carrying 1-10 over Lower Thomas Creek in Lake 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 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 396 vehicles a day, roughly 5% of them trucks, projected to reach 416 by 2025. The structure is 56 ft (17.1 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries1-10
CrossesLower Thomas Creek
Location1.45 MI West of Lakeview
RouteCounty Highway 0B334
StateOregon
Coordinates42.17871, -120.38434
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span54 ft (16.5 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic396 (2020)
Projected traffic416 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 1-10 over Lower Thomas Creek built?

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

What condition is 1-10 over Lower Thomas 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 July 2024.

How much traffic does 1-10 over Lower Thomas Creek carry?

About 396 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is 1-10 over Lower Thomas Creek?

The structure is 56 ft (17.1 m) long with a longest span of 54 ft (16.5 m) and a deck 32 ft wide.

Who owns 1-10 over Lower Thomas Creek?

It is owned by the County Highway Agency.