US Bridges

Leonard Road over S. Fork Newaukum River

Fair

Lewis County, Washington · 0.3 S. Onalaska · Structure no. 085939000000000

Built
1992
33 years old
Condition
Fair
inspected January 2023
Type
Channel Beam
Concrete
Length
150 ft
3 main spans
Daily traffic
1,929
2022 count
Owner
County
County Highway Agency

About this bridge

Leonard Road over S. Fork Newaukum River is a concrete channel beam carrying Leonard Road over S. Fork Newaukum River in Lewis County, Washington. It was built in 1992, so it is 33 years old, younger than the Washington average of 49.8 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 1,929 vehicles a day, roughly 18% of them trucks, projected to reach 3,484 by 2042. The structure is 150 ft (45.7 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesLeonard Road
CrossesS. Fork Newaukum River
Location0.3 S. Onalaska
RouteCounty Highway 94014
CountyLewis County
StateWashington
Coordinates46.57104, -122.71931
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span60 ft (18.3 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,929 (2022)
Projected traffic3,484 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Leonard Road over S. Fork Newaukum River built?

It was built in 1992, making it 33 years old in 2025.

What condition is Leonard Road over S. Fork Newaukum River 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 January 2023.

How much traffic does Leonard Road over S. Fork Newaukum River carry?

About 1,929 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Leonard Road over S. Fork Newaukum River?

The structure is 150 ft (45.7 m) long with a longest span of 60 ft (18.3 m) and a deck 31 ft wide.

Who owns Leonard Road over S. Fork Newaukum River?

It is owned by the County Highway Agency.