US Bridges

Northport-Boundary over Deep Creek

FairPosted for load

Stevens County, Washington · 01.98 NE JCT SR 25 · Structure no. 084627000000000

Built
1962
63 years old, rebuilt 2004
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
192 ft
9 main spans
Daily traffic
262
2019 count
Owner
County
County Highway Agency

About this bridge

Northport-Boundary over Deep Creek is a wood or timber stringer/multi-beam or girder carrying Northport-Boundary over Deep Creek in Stevens County, Washington. It was built in 1962 and reconstructed in 2004, so it is 63 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. Its operating status is: posted for load restriction.

It carries about 262 vehicles a day, roughly 10% of them trucks, projected to reach 400 by 2039. The structure is 192 ft (58.5 m) long and 26 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

CarriesNorthport-Boundary
CrossesDeep Creek
Location01.98 NE JCT SR 25
RouteCounty Highway 94550
Coordinates48.9252, -117.74794
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating19 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans9
Design loadH 15
Structure length192 ft (58.5 m)
Longest span40 ft (12.2 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic262 (2019)
Projected traffic400 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 Northport-Boundary over Deep Creek built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2004.

What condition is Northport-Boundary over Deep 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 July 2023.

How much traffic does Northport-Boundary over Deep Creek carry?

About 262 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Northport-Boundary over Deep Creek?

The structure is 192 ft (58.5 m) long with a longest span of 40 ft (12.2 m) and a deck 26 ft wide.

Who owns Northport-Boundary over Deep Creek?

It is owned by the County Highway Agency.