US Bridges

US 395 over Little Boulder CR

Fair

Ferry County, Washington · 21.8 N JCT SR 20 · Structure no. 000000ET0000000

Built
1900
125 years old, rebuilt 1932
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
57 ft
2 main spans
Daily traffic
358
2023 count
Owner
State
State Highway Agency

About this bridge

US 395 over Little Boulder CR is a steel continuous stringer/multi-beam or girder carrying US 395 over Little Boulder CR in Ferry County, Washington. It was built in 1900 and reconstructed in 1932, so it is 125 years old, older 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 358 vehicles a day, roughly 16% of them trucks, projected to reach 547 by 2039. The structure is 57 ft (17.4 m) long and 41 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 395
CrossesLittle Boulder CR
Location21.8 N JCT SR 20
RouteU.S. Route 395
CountyFerry County
StateWashington
Coordinates48.91139, -118.2055
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating15 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 15
Structure length57 ft (17.4 m)
Longest span17 ft (5.2 m)
Deck width41 ft (12.6 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic358 (2023)
Projected traffic547 by 2039
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$731,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 395 over Little Boulder CR built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1932.

What condition is US 395 over Little Boulder CR 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 August 2024.

How much traffic does US 395 over Little Boulder CR carry?

About 358 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is US 395 over Little Boulder CR?

The structure is 57 ft (17.4 m) long with a longest span of 17 ft (5.2 m) and a deck 41 ft wide.

Who owns US 395 over Little Boulder CR?

It is owned by the State Highway Agency.