US Bridges

Napoleon Bridge RD over Kettle River

Good

Stevens County, Washington · .65 W SR395 · Structure no. 086405000000000

Built
1998
27 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
318 ft
3 main spans
Daily traffic
63
2017 count
Owner
County
County Highway Agency

About this bridge

Napoleon Bridge RD over Kettle River is a prestressed concrete continuous stringer/multi-beam or girder carrying Napoleon Bridge RD over Kettle River in Stevens County, Washington. It was built in 1998, so it is 27 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 63 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2037. The structure is 318 ft (96.9 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesNapoleon Bridge RD
CrossesKettle River
Location.65 W SR395
RouteCounty Highway 40460
Coordinates48.735, -118.11724
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 protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating22.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length318 ft (96.9 m)
Longest span106 ft (32.3 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63 (2017)
Projected traffic120 by 2037
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Napoleon Bridge RD over Kettle River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Napoleon Bridge RD over Kettle River 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 July 2023.

How much traffic does Napoleon Bridge RD over Kettle River carry?

About 63 vehicles per day (2017 count), of which roughly 10% are trucks.

How long is Napoleon Bridge RD over Kettle River?

The structure is 318 ft (96.9 m) long with a longest span of 106 ft (32.3 m) and a deck 31 ft wide.

Who owns Napoleon Bridge RD over Kettle River?

It is owned by the County Highway Agency.