US Bridges

Lake Whatcom Blvd over Austin Creek

Good

Whatcom County, Washington · 00.2 Lk Louise Road · Structure no. 087388000000000

Built
2004
21 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
5,495
2020 count
Owner
County
County Highway Agency

About this bridge

Lake Whatcom Blvd over Austin Creek is a prestressed concrete stringer/multi-beam or girder carrying Lake Whatcom Blvd over Austin Creek in Whatcom County, Washington. It was built in 2004, so it is 21 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 5,495 vehicles a day, roughly 1% of them trucks, projected to reach 6,201 by 2042. The structure is 82 ft (25 m) long and 43 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesLake Whatcom Blvd
CrossesAustin Creek
Location00.2 Lk Louise Road
RouteCounty Highway 44120
Coordinates48.71294, -122.33113
Functional classUrban Collector

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 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum 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 rating66 US tons
Inventory rating52.5 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length82 ft (25 m)
Longest span73 ft (22.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,495 (2020)
Projected traffic6,201 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lake Whatcom Blvd over Austin Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Lake Whatcom Blvd over Austin 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 Lake Whatcom Blvd over Austin Creek carry?

About 5,495 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Lake Whatcom Blvd over Austin Creek?

The structure is 82 ft (25 m) long with a longest span of 73 ft (22.3 m) and a deck 43 ft wide.

Who owns Lake Whatcom Blvd over Austin Creek?

It is owned by the County Highway Agency.