US Bridges

N 17th Street over Fishtrap Creek

FairPosted for load

Whatcom County, Washington · At Liberty · Structure no. 085332000000000

Built
1975
50 years old
Condition
Fair
inspected January 2023
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
1,140
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

N 17th Street over Fishtrap Creek is a concrete culvert carrying N 17th Street over Fishtrap Creek in Whatcom County, Washington. It was built in 1975, so it is 50 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 1,140 vehicles a day, roughly 5% of them trucks, projected to reach 1,500 by 2045. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN 17th Street
CrossesFishtrap Creek
LocationAt Liberty
RouteCity Street 710
Coordinates48.94319, -122.46917
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating48 US tons
Inventory rating28 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,140 (2023)
Projected traffic1,500 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was N 17th Street over Fishtrap Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is N 17th Street over Fishtrap 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 January 2023.

How much traffic does N 17th Street over Fishtrap Creek carry?

About 1,140 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is N 17th Street over Fishtrap Creek?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m).

Who owns N 17th Street over Fishtrap Creek?

It is owned by the City or Municipal Highway Agency.