US Bridges

Holly Street over Whatcom Creek

FairPosted for load

Whatcom County, Washington · .3 W of City Hall · Structure no. 085522000000000

Built
1922
103 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete
Length
32 ft
1 main span
Daily traffic
8,700
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Holly Street over Whatcom Creek is a concrete tee beam carrying Holly Street over Whatcom Creek in Whatcom County, Washington. It was built in 1922, so it is 103 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 8,700 vehicles a day, roughly 5% of them trucks, projected to reach 12,000 by 2043. The structure is 32 ft (9.8 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHolly Street
CrossesWhatcom Creek
Location.3 W of City Hall
RouteCity Street 86601
Coordinates48.75303, -122.484
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27 US tons
Inventory rating16 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width81 ft (24.6 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2021)
Projected traffic12,000 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Holly Street over Whatcom Creek built?

It was built in 1922, making it 103 years old in 2025.

What condition is Holly Street over Whatcom Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does Holly Street over Whatcom Creek carry?

About 8,700 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Holly Street over Whatcom Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 81 ft wide.

Who owns Holly Street over Whatcom Creek?

It is owned by the City or Municipal Highway Agency.