US Bridges

Magnus RD over Kearney CR

Good

Lewis County, Washington · 9.0 E Onalaska · Structure no. 082145000000000

Built
1985
40 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete
Length
40 ft
2 main spans
Daily traffic
36
2021 count
Owner
County
County Highway Agency

About this bridge

Magnus RD over Kearney CR is a concrete slab carrying Magnus RD over Kearney CR in Lewis County, Washington. It was built in 1985, so it is 40 years old, younger 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.

It carries about 36 vehicles a day, roughly 22% of them trucks, projected to reach 65 by 2041. The structure is 40 ft (12.2 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMagnus RD
CrossesKearney CR
Location9.0 E Onalaska
RouteCounty Highway 66430
Coordinates46.60986, -122.58367
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36 (2021)
Projected traffic65 by 2041
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$608,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Magnus RD over Kearney CR built?

It was built in 1985, making it 40 years old in 2025.

What condition is Magnus RD over Kearney CR 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 January 2024.

How much traffic does Magnus RD over Kearney CR carry?

About 36 vehicles per day (2021 count), of which roughly 22% are trucks.

How long is Magnus RD over Kearney CR?

The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Magnus RD over Kearney CR?

It is owned by the County Highway Agency.