US Bridges

North Machias RD over Little Pilchuck Creek

Fair

Snohomish County, Washington · 1.5 S JCT SR 92 · Structure no. 081015000000000

Built
1977
48 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
28 ft
2 main spans
Daily traffic
5,774
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

North Machias RD over Little Pilchuck Creek is a wood or timber stringer/multi-beam or girder carrying North Machias RD over Little Pilchuck Creek in Snohomish County, Washington. It was built in 1977, so it is 48 years old, younger 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 5 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 5,774 vehicles a day, roughly 15% of them trucks, projected to reach 7,500 by 2041. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNorth Machias RD
CrossesLittle Pilchuck Creek
Location1.5 S JCT SR 92
RouteCounty Highway 94780
Coordinates48.01235, -122.04776
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating33 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 15
Structure length28 ft (8.5 m)
Longest span14 ft (4.3 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,774 (2023)
Projected traffic7,500 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was North Machias RD over Little Pilchuck Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is North Machias RD over Little Pilchuck 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 November 2023.

How much traffic does North Machias RD over Little Pilchuck Creek carry?

About 5,774 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is North Machias RD over Little Pilchuck Creek?

The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m) and a deck 24 ft wide.

Who owns North Machias RD over Little Pilchuck Creek?

It is owned by the City or Municipal Highway Agency.