US Bridges

Wickersham RD over Np RR

Good

Whatcom County, Washington · 00.3 W Innis Ck RD · Structure no. 084179000000000

Built
1955
70 years old, rebuilt 1994
Condition
Good
inspected February 2024
Type
Slab
Prestressed Concrete
Length
126 ft
3 main spans
Daily traffic
159
2020 count
Owner
County
County Highway Agency

About this bridge

Wickersham RD over Np RR is a prestressed concrete slab carrying Wickersham RD over Np RR in Whatcom County, Washington. It was built in 1955 and reconstructed in 1994, so it is 70 years old, older 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 126 ft (38.4 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesWickersham RD
CrossesNp RR
Location00.3 W Innis Ck RD
RouteCounty Highway 88840
Coordinates48.65296, -122.20971
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.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length126 ft (38.4 m)
Longest span54 ft (16.5 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 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 and pedestrian
CrossesRailroad
Detour if closed5 mi (8 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$4.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wickersham RD over Np RR built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1994.

What condition is Wickersham RD over Np RR 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 Np RR carry?

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

How long is Wickersham RD over Np RR?

The structure is 126 ft (38.4 m) long with a longest span of 54 ft (16.5 m) and a deck 31 ft wide.

Who owns Wickersham RD over Np RR?

It is owned by the County Highway Agency.