US Bridges

US 30 (hwy 92) over Lost Creek

FairPosted for load

Columbia County, Oregon · 7.0 MI E Clatskanie · Structure no. 07722 02W 05529

Built
1953
72 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Concrete Continuous
Length
50 ft
3 main spans
Daily traffic
10,990
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 (hwy 92) over Lost Creek is a concrete continuous tee beam carrying US 30 (hwy 92) over Lost Creek in Columbia County, Oregon. It was built in 1953, so it is 72 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. Its operating status is: posted for other load-capacity restriction.

It carries about 10,990 vehicles a day, roughly 5% of them trucks, projected to reach 11,100 by 2042. The structure is 50 ft (15.2 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 30 (hwy 92)
CrossesLost Creek
Location7.0 MI E Clatskanie
RouteU.S. Route 30
CountyColumbia County
StateOregon
Coordinates46.09537, -123.08074
Functional classRural Principal Arterial - Other

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span32 ft (9.8 m)
Deck width35 ft (10.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,990 (2022)
Projected traffic11,100 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$256,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 30 (hwy 92) over Lost Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is US 30 (hwy 92) over Lost 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 November 2023.

How much traffic does US 30 (hwy 92) over Lost Creek carry?

About 10,990 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is US 30 (hwy 92) over Lost Creek?

The structure is 50 ft (15.2 m) long with a longest span of 32 ft (9.8 m) and a deck 35 ft wide.

Who owns US 30 (hwy 92) over Lost Creek?

It is owned by the State Highway Agency.