US Bridges

Old US 395 Align over Boulder Creek

Fair

Ferry County, Washington · 15.4 N JCT SR 20 · Structure no. 086733000000000

Built
1920
105 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
35 ft
1 main span
Daily traffic
1
2010 count
Owner
State
State Highway Agency

About this bridge

Old US 395 Align over Boulder Creek is a concrete tee beam carrying Old US 395 Align over Boulder Creek in Ferry County, Washington. It was built in 1920, so it is 105 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 1 vehicles a day, projected to reach 1 by 2036. The structure is 35 ft (10.7 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesOld US 395 Align
CrossesBoulder Creek
Location15.4 N JCT SR 20
RouteCounty Highway 395
CountyFerry County
StateWashington
Coordinates48.83706, -118.18189
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33 US tons
Inventory rating20 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span31 ft (9.4 m)
Deck width23 ft (6.9 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1 (2010)
Projected traffic1 by 2036
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$432,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old US 395 Align over Boulder Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is Old US 395 Align over Boulder Creek 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 Old US 395 Align over Boulder Creek carry?

About 1 vehicles per day (2010 count).

How long is Old US 395 Align over Boulder Creek?

The structure is 35 ft (10.7 m) long with a longest span of 31 ft (9.4 m) and a deck 23 ft wide.

Who owns Old US 395 Align over Boulder Creek?

It is owned by the State Highway Agency.