US Bridges

Jones RD over Sumas River

FairPosted for load

Whatcom County, Washington · 0.1 W Conchman Rd. · Structure no. 084869000000000

Built
1917
108 years old, rebuilt 1992
Condition
Fair
inspected November 2024
Type
Channel Beam
Concrete
Length
152 ft
8 main spans
Daily traffic
220
2024 count
Owner
County
County Highway Agency

About this bridge

Jones RD over Sumas River is a concrete channel beam carrying Jones RD over Sumas River in Whatcom County, Washington. It was built in 1917 and reconstructed in 1992, so it is 108 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 220 vehicles a day, roughly 6% of them trucks, projected to reach 350 by 2046. The structure is 152 ft (46.3 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesJones RD
CrossesSumas River
Location0.1 W Conchman Rd.
RouteCounty Highway 68020
Coordinates48.99999, -122.23597
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 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 rating23.9 US tons
Inventory rating18.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans8
Design loadUnknown
Structure length152 ft (46.3 m)
Longest span19 ft (5.7 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2024)
Projected traffic350 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Jones RD over Sumas River built?

It was built in 1917, making it 108 years old in 2025. It was reconstructed in 1992.

What condition is Jones RD over Sumas River 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 November 2024.

How much traffic does Jones RD over Sumas River carry?

About 220 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Jones RD over Sumas River?

The structure is 152 ft (46.3 m) long with a longest span of 19 ft (5.7 m) and a deck 27 ft wide.

Who owns Jones RD over Sumas River?

It is owned by the County Highway Agency.