US Bridges

Farm to Market Rd. over Samish R

Fair

Skagit County, Washington · 5.9 N JCT SR 20 · Structure no. 0007070A0000000

Built
1963
62 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
158 ft
7 main spans
Daily traffic
920
2023 count
Owner
County
County Highway Agency

About this bridge

Farm to Market Rd. over Samish R is a concrete continuous slab carrying Farm to Market Rd. over Samish R in Skagit County, Washington. It was built in 1963, so it is 62 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.

It carries about 920 vehicles a day, roughly 8% of them trucks, projected to reach 1,662 by 2043. The structure is 158 ft (48.2 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFarm to Market Rd.
CrossesSamish R
Location5.9 N JCT SR 20
RouteCounty Highway 31010
CountySkagit County
StateWashington
Coordinates48.53167, -122.44429
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Last inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length158 ft (48.2 m)
Longest span24 ft (7.3 m)
Deck width32 ft (9.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic920 (2023)
Projected traffic1,662 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$2.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Farm to Market Rd. over Samish R built?

It was built in 1963, making it 62 years old in 2025.

What condition is Farm to Market Rd. over Samish R 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 June 2023.

How much traffic does Farm to Market Rd. over Samish R carry?

About 920 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Farm to Market Rd. over Samish R?

The structure is 158 ft (48.2 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.

Who owns Farm to Market Rd. over Samish R?

It is owned by the County Highway Agency.