US Bridges

SR 539 over Ten Mile Creek

Good

Whatcom County, Washington · 5.8 N JCT I-5 · Structure no. 0017273A0000000

Built
2008
17 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
19,679
2023 count
Owner
State
State Highway Agency

About this bridge

SR 539 over Ten Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 539 over Ten Mile Creek in Whatcom County, Washington. It was built in 2008, so it is 17 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 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 19,679 vehicles a day, roughly 4% of them trucks, projected to reach 28,147 by 2039. The structure is 60 ft (18.3 m) long and 94 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesSR 539
CrossesTen Mile Creek
Location5.8 N JCT I-5
RouteState Highway 539
Coordinates48.86692, -122.48575
Functional classRural Principal Arterial - Other

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 inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating56 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length60 ft (18.3 m)
Longest span57 ft (17.4 m)
Deck width94 ft (28.6 m)
Roadway width92 ft (28 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,679 (2023)
Projected traffic28,147 by 2039
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemYes

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$2.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 539 over Ten Mile Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is SR 539 over Ten Mile 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 May 2024.

How much traffic does SR 539 over Ten Mile Creek carry?

About 19,679 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR 539 over Ten Mile Creek?

The structure is 60 ft (18.3 m) long with a longest span of 57 ft (17.4 m) and a deck 94 ft wide.

Who owns SR 539 over Ten Mile Creek?

It is owned by the State Highway Agency.