US Bridges

Wickersham RD over Samish River

Good

Whatcom County, Washington · 00.4 E of Valley HWY · Structure no. 087054000000000

Built
1998
27 years old
Condition
Good
inspected February 2024
Type
Slab
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
159
2020 count
Owner
County
County Highway Agency

About this bridge

Wickersham RD over Samish River is a prestressed concrete slab carrying Wickersham RD over Samish River in Whatcom County, Washington. It was built in 1998, so it is 27 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 159 vehicles a day, roughly 1% of them trucks, projected to reach 350 by 2042. The structure is 69 ft (21 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesWickersham RD
CrossesSamish River
Location00.4 E of Valley HWY
RouteCounty Highway 88840
Coordinates48.65286, -122.20543
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating50.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length69 ft (21 m)
Longest span66 ft (20.1 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159 (2020)
Projected traffic350 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Wickersham RD over Samish River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Wickersham RD over Samish River 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 February 2024.

How much traffic does Wickersham RD over Samish River carry?

About 159 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Wickersham RD over Samish River?

The structure is 69 ft (21 m) long with a longest span of 66 ft (20.1 m) and a deck 32 ft wide.

Who owns Wickersham RD over Samish River?

It is owned by the County Highway Agency.