US Bridges

Main ST over Pepin Creek

Good

Whatcom County, Washington · 100 West of Dahlia ST · Structure no. 089341000000000

Built
2022
3 years old
Condition
Good
inspected January 2023
Type
Tee Beam
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
6,100
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main ST over Pepin Creek is a prestressed concrete tee beam carrying Main ST over Pepin Creek in Whatcom County, Washington. It was built in 2022, so it is 3 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 6,100 vehicles a day, roughly 8% of them trucks, projected to reach 8,500 by 2044. The structure is 67 ft (20.4 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMain ST
CrossesPepin Creek
Location100 West of Dahlia ST
RouteCity Street 710
Coordinates48.94659, -122.46904
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 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 rating73.2 US tons
Inventory rating51 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length67 ft (20.4 m)
Longest span67 ft (20.4 m)
Deck width58 ft (17.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2022)
Projected traffic8,500 by 2044
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$2.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST over Pepin Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is Main ST over Pepin 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 ST over Pepin Creek carry?

About 6,100 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Main ST over Pepin Creek?

The structure is 67 ft (20.4 m) long with a longest span of 67 ft (20.4 m) and a deck 58 ft wide.

Who owns Main ST over Pepin Creek?

It is owned by the City or Municipal Highway Agency.