US Bridges

Shady LN over Silver Creek

Fair

Whatcom County, Washington · 00.14 N Rural Ave · Structure no. 080242000000000

Built
1953
72 years old, rebuilt 1971
Condition
Fair
inspected January 2024
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
70
2024 count
Owner
County
County Highway Agency

About this bridge

Shady LN over Silver Creek is a concrete channel beam carrying Shady LN over Silver Creek in Whatcom County, Washington. It was built in 1953 and reconstructed in 1971, so it is 72 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 70 vehicles a day, roughly 1% of them trucks, projected to reach 80 by 2046. The structure is 31 ft (9.4 m) long and 26 ft wide.

CarriesShady LN
CrossesSilver Creek
Location00.14 N Rural Ave
RouteCounty Highway 72510
Coordinates48.8101, -122.56896
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.3 US tons
Inventory rating21.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2024)
Projected traffic80 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Shady LN over Silver Creek built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1971.

What condition is Shady LN over Silver Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does Shady LN over Silver Creek carry?

About 70 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Shady LN over Silver Creek?

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.

Who owns Shady LN over Silver Creek?

It is owned by the County Highway Agency.