US Bridges

SR 9 over Lake Creek

Good

Skagit County, Washington · 0.13 N JCT SR 534 · Structure no. 0019707B0000000

Built
2022
3 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
1,651
2023 count
Owner
State
State Highway Agency

About this bridge

SR 9 over Lake Creek is a concrete culvert carrying SR 9 over Lake Creek in Skagit County, Washington. It was built in 2022, so it is 3 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,651 vehicles a day, roughly 7% of them trucks, projected to reach 2,400 by 2039. The structure is 28 ft (8.4 m) long and 35 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesSR 9
CrossesLake Creek
Location0.13 N JCT SR 534
RouteState Highway 9
CountySkagit County
StateWashington
Coordinates48.31747, -122.23534
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating46.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length28 ft (8.4 m)
Longest span26 ft (7.9 m)
Deck width35 ft (10.8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,651 (2023)
Projected traffic2,400 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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$368,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 9 over Lake Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is SR 9 over Lake 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 July 2023.

How much traffic does SR 9 over Lake Creek carry?

About 1,651 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is SR 9 over Lake Creek?

The structure is 28 ft (8.4 m) long with a longest span of 26 ft (7.9 m) and a deck 35 ft wide.

Who owns SR 9 over Lake Creek?

It is owned by the State Highway Agency.