US Bridges

Kelly RD over Anderson CR

Good

Whatcom County, Washington · 00.4 W Sand RD · Structure no. 084186000000000

Built
1939
86 years old, rebuilt 2005
Condition
Good
inspected October 2023
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
450
2019 count
Owner
County
County Highway Agency

About this bridge

Kelly RD over Anderson CR is a concrete channel beam carrying Kelly RD over Anderson CR in Whatcom County, Washington. It was built in 1939 and reconstructed in 2005, so it is 86 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 450 vehicles a day, roughly 4% of them trucks, projected to reach 825 by 2041. The structure is 31 ft (9.4 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesKelly RD
CrossesAnderson CR
Location00.4 W Sand RD
RouteCounty Highway 55500
Coordinates48.73333, -122.33833
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating27.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2019)
Projected traffic825 by 2041
Trucks4%
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 statusNot eligible for the National Register of Historic Places
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 Kelly RD over Anderson CR built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 2005.

What condition is Kelly RD over Anderson CR 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 October 2023.

How much traffic does Kelly RD over Anderson CR carry?

About 450 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Kelly RD over Anderson CR?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns Kelly RD over Anderson CR?

It is owned by the County Highway Agency.