US Bridges

Martin RD over Anderson CR

PoorPosted for load

Whatcom County, Washington · 0.2 MI E. Roberts RD · Structure no. 082482000000000

Built
1958
67 years old, rebuilt 1974
Condition
Poor
inspected October 2024
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
80
2024 count
Owner
County
County Highway Agency

About this bridge

Martin RD over Anderson CR is a concrete channel beam carrying Martin RD over Anderson CR in Whatcom County, Washington. It was built in 1958 and reconstructed in 1974, so it is 67 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for other load-capacity restriction.

It carries about 80 vehicles a day, roughly 1% of them trucks, projected to reach 200 by 2042. The structure is 31 ft (9.4 m) long and 13 ft wide.

CarriesMartin RD
CrossesAnderson CR
Location0.2 MI E. Roberts RD
RouteCounty Highway 56340
Coordinates48.86196, -122.33253
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be 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 rating22.8 US tons
Inventory rating17.5 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 width13 ft (4.1 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2024)
Projected traffic200 by 2042
Trucks1%
Lanes on structure1
Traffic directionOne-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 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Martin RD over Anderson CR built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1974.

What condition is Martin RD over Anderson CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Martin RD over Anderson CR carry?

About 80 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Martin 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 13 ft wide.

Who owns Martin RD over Anderson CR?

It is owned by the County Highway Agency.