US Bridges

Chasteen RD over Ten Mile CR

Fair

Whatcom County, Washington · 00.1 N Ten Mile Rd. · Structure no. 082340000000000

Built
1946
79 years old, rebuilt 1994
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
38 ft
2 main spans
Daily traffic
68
2023 count
Owner
County
County Highway Agency

About this bridge

Chasteen RD over Ten Mile CR is a concrete channel beam carrying Chasteen RD over Ten Mile CR in Whatcom County, Washington. It was built in 1946 and reconstructed in 1994, so it is 79 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 68 vehicles a day, roughly 5% of them trucks, projected to reach 88 by 2045. The structure is 38 ft (11.6 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesChasteen RD
CrossesTen Mile CR
Location00.1 N Ten Mile Rd.
RouteCounty Highway 56450
CountyWhatcom County
StateWashington
Coordinates48.87032, -122.46462
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans2
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span18 ft (5.4 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68 (2023)
Projected traffic88 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Chasteen RD over Ten Mile CR built?

It was built in 1946, making it 79 years old in 2025. It was reconstructed in 1994.

What condition is Chasteen RD over Ten Mile CR 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 March 2023.

How much traffic does Chasteen RD over Ten Mile CR carry?

About 68 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Chasteen RD over Ten Mile CR?

The structure is 38 ft (11.6 m) long with a longest span of 18 ft (5.4 m) and a deck 26 ft wide.

Who owns Chasteen RD over Ten Mile CR?

It is owned by the County Highway Agency.