US Bridges

SR 9 over W Fk Nookachamps Creek

Good

Skagit County, Washington · 7.3 N JCT SR 534 · Structure no. 0004281A0000000

Built
1952
73 years old
Condition
Good
inspected October 2023
Type
Slab
Wood or Timber
Length
70 ft
4 main spans
Daily traffic
4,825
2023 count
Owner
State
State Highway Agency

About this bridge

SR 9 over W Fk Nookachamps Creek is a wood or timber slab carrying SR 9 over W Fk Nookachamps Creek in Skagit County, Washington. It was built in 1952, so it is 73 years old, older 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 4,825 vehicles a day, roughly 7% of them trucks, projected to reach 7,414 by 2039. The structure is 70 ft (21.3 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesSR 9
CrossesW Fk Nookachamps Creek
Location7.3 N JCT SR 534
RouteState Highway 9
CountySkagit County
StateWashington
Coordinates48.39989, -122.23831
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
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 rating87 US tons
Inventory rating63.9 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadHS 15
Structure length70 ft (21.3 m)
Longest span17 ft (5.2 m)
Deck width27 ft (8.2 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,825 (2023)
Projected traffic7,414 by 2039
Trucks7%
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

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$864,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 9 over W Fk Nookachamps Creek built?

It was built in 1952, making it 73 years old in 2025.

What condition is SR 9 over W Fk Nookachamps Creek 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 October 2023.

How much traffic does SR 9 over W Fk Nookachamps Creek carry?

About 4,825 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SR 9 over W Fk Nookachamps Creek?

The structure is 70 ft (21.3 m) long with a longest span of 17 ft (5.2 m) and a deck 27 ft wide.

Who owns SR 9 over W Fk Nookachamps Creek?

It is owned by the State Highway Agency.