US Bridges

Lake Samish RD over Bear Creek

Fair

Skagit County, Washington · 2.0 NW JCT I-5 · Structure no. 079716000000000

Built
1959
66 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
50 ft
2 main spans
Daily traffic
491
2021 count
Owner
County
County Highway Agency

About this bridge

Lake Samish RD over Bear Creek is a concrete tee beam carrying Lake Samish RD over Bear Creek in Skagit County, Washington. It was built in 1959, so it is 66 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 491 vehicles a day, roughly 6% of them trucks, projected to reach 887 by 2041. The structure is 50 ft (15.2 m) long and 26 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesLake Samish RD
CrossesBear Creek
Location2.0 NW JCT I-5
RouteCounty Highway 25610
Coordinates48.64036, -122.37164
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span24 ft (7.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic491 (2021)
Projected traffic887 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$570,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lake Samish RD over Bear Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is Lake Samish RD over Bear Creek 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 May 2023.

How much traffic does Lake Samish RD over Bear Creek carry?

About 491 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Lake Samish RD over Bear Creek?

The structure is 50 ft (15.2 m) long with a longest span of 24 ft (7.4 m) and a deck 26 ft wide.

Who owns Lake Samish RD over Bear Creek?

It is owned by the County Highway Agency.