US Bridges

Main Street over Fishtrap Creek

Good

Whatcom County, Washington · 0.2 W Third Street · Structure no. 088697000000000

Built
2014
11 years old
Condition
Good
inspected January 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
96 ft
1 main span
Daily traffic
6,039
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main Street over Fishtrap Creek is a prestressed concrete continuous tee beam carrying Main Street over Fishtrap Creek in Whatcom County, Washington. It was built in 2014, so it is 11 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 6,039 vehicles a day, roughly 8% of them trucks, projected to reach 8,500 by 2045. The structure is 96 ft (29.3 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMain Street
CrossesFishtrap Creek
Location0.2 W Third Street
RouteCity Street 710
Coordinates48.94678, -122.45994
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating72 US tons
Inventory rating54 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length96 ft (29.3 m)
Longest span92 ft (28 m)
Deck width56 ft (17.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,039 (2023)
Projected traffic8,500 by 2045
Trucks8%
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$3.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Main Street over Fishtrap Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is Main Street 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 Main Street over Fishtrap Creek carry?

About 6,039 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Main Street over Fishtrap Creek?

The structure is 96 ft (29.3 m) long with a longest span of 92 ft (28 m) and a deck 56 ft wide.

Who owns Main Street over Fishtrap Creek?

It is owned by the City or Municipal Highway Agency.