US Bridges

SR 9 over Tawes Creek

Good

Whatcom County, Washington · 11.0 N Skagit CO · Structure no. 0019380A0000000

Built
2019
6 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
31 ft
1 main span
Daily traffic
3,517
2023 count
Owner
State
State Highway Agency

About this bridge

SR 9 over Tawes Creek is a concrete slab carrying SR 9 over Tawes Creek in Whatcom County, Washington. It was built in 2019, so it is 6 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 3,517 vehicles a day, roughly 15% of them trucks, projected to reach 4,774 by 2039. The structure is 31 ft (9.4 m) long and 34 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesSR 9
CrossesTawes Creek
Location11.0 N Skagit CO
RouteState Highway 9
CountyWhatcom County
StateWashington
Coordinates48.79672, -122.19094
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 48 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 rating105.1 US tons
Inventory rating68.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length31 ft (9.4 m)
Longest span22 ft (6.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,517 (2023)
Projected traffic4,774 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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$501,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 9 over Tawes Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is SR 9 over Tawes 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 Tawes Creek carry?

About 3,517 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is SR 9 over Tawes Creek?

The structure is 31 ft (9.4 m) long with a longest span of 22 ft (6.7 m) and a deck 34 ft wide.

Who owns SR 9 over Tawes Creek?

It is owned by the State Highway Agency.