US Bridges

James Street over Squalicum Creek

Good

Whatcom County, Washington · 1 Mi. N. of Sunset · Structure no. 088715000000000

Built
2015
10 years old
Condition
Good
inspected April 2023
Type
Tee Beam
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
11,500
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

James Street over Squalicum Creek is a prestressed concrete tee beam carrying James Street over Squalicum Creek in Whatcom County, Washington. It was built in 2015, so it is 10 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 11,500 vehicles a day, roughly 5% of them trucks, projected to reach 15,000 by 2043. The structure is 90 ft (27.3 m) long and 52 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesJames Street
CrossesSqualicum Creek
Location1 Mi. N. of Sunset
RouteCity Street 30310
Coordinates48.77769, -122.46389
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 rating77.2 US tons
Inventory rating53.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length90 ft (27.3 m)
Longest span85 ft (25.9 m)
Deck width52 ft (15.9 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,500 (2021)
Projected traffic15,000 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was James Street over Squalicum Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is James Street over Squalicum 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 April 2023.

How much traffic does James Street over Squalicum Creek carry?

About 11,500 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is James Street over Squalicum Creek?

The structure is 90 ft (27.3 m) long with a longest span of 85 ft (25.9 m) and a deck 52 ft wide.

Who owns James Street over Squalicum Creek?

It is owned by the City or Municipal Highway Agency.