US Bridges

Aaron Drive over Fishtrap Creek

Good

Whatcom County, Washington · 0.3 S SR 546 · Structure no. 086398000000000

Built
1999
26 years old
Condition
Good
inspected January 2023
Type
Frame
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
2,536
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Aaron Drive over Fishtrap Creek is a prestressed concrete frame carrying Aaron Drive over Fishtrap Creek in Whatcom County, Washington. It was built in 1999, so it is 26 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 2,536 vehicles a day, roughly 2% of them trucks, projected to reach 3,500 by 2044. The structure is 36 ft (11 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesAaron Drive
CrossesFishtrap Creek
Location0.3 S SR 546
RouteCity Street 710
CountyWhatcom County
StateWashington
Coordinates48.96219, -122.43394
Functional classUrban Local

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 protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width40 ft (12.2 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,536 (2022)
Projected traffic3,500 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Aaron Drive over Fishtrap Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Aaron Drive over Fishtrap 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 January 2023.

How much traffic does Aaron Drive over Fishtrap Creek carry?

About 2,536 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Aaron Drive over Fishtrap Creek?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 40 ft wide.

Who owns Aaron Drive over Fishtrap Creek?

It is owned by the City or Municipal Highway Agency.