US Bridges

Oklahoma Road over Lava Creek

GoodPosted for load

Skamania County, Washington · 0.23 N JCT Willard · Structure no. 084715000000000

Built
1965
60 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
46
2023 count
Owner
County
County Highway Agency

About this bridge

Oklahoma Road over Lava Creek is a prestressed concrete stringer/multi-beam or girder carrying Oklahoma Road over Lava Creek in Skamania County, Washington. It was built in 1965, so it is 60 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 46 vehicles a day, roughly 9% of them trucks, projected to reach 275 by 2039. The structure is 94 ft (28.7 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOklahoma Road
CrossesLava Creek
Location0.23 N JCT Willard
RouteCounty Highway 30860
Coordinates45.78333, -121.63028
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 alignment8: Equal to present desirable criteria
Operating rating27.9 US tons
Inventory rating21.4 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1 (+2 approach)
Design loadH 20
Structure length94 ft (28.7 m)
Longest span62 ft (18.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46 (2023)
Projected traffic275 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Oklahoma Road over Lava Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Oklahoma Road over Lava Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Oklahoma Road over Lava Creek carry?

About 46 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Oklahoma Road over Lava Creek?

The structure is 94 ft (28.7 m) long with a longest span of 62 ft (18.9 m) and a deck 26 ft wide.

Who owns Oklahoma Road over Lava Creek?

It is owned by the County Highway Agency.