US Bridges

East Johnson Road over Carpenter Creek

Fair

Skagit County, Washington · 1.0 E JCT Cedardale Road · Structure no. 080791000000000

Built
1981
44 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
85
2023 count
Owner
County
County Highway Agency

About this bridge

East Johnson Road over Carpenter Creek is a prestressed concrete stringer/multi-beam or girder carrying East Johnson Road over Carpenter Creek in Skagit County, Washington. It was built in 1981, so it is 44 years old, younger 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 85 vehicles a day, roughly 14% of them trucks, projected to reach 104 by 2043. The structure is 50 ft (15.3 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesEast Johnson Road
CrossesCarpenter Creek
Location1.0 E JCT Cedardale Road
RouteCounty Highway 86020
CountySkagit County
StateWashington
Coordinates48.35594, -122.31514
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating73 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length50 ft (15.3 m)
Longest span50 ft (15.2 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic85 (2023)
Projected traffic104 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was East Johnson Road over Carpenter Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is East Johnson Road over Carpenter 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 September 2023.

How much traffic does East Johnson Road over Carpenter Creek carry?

About 85 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is East Johnson Road over Carpenter Creek?

The structure is 50 ft (15.3 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns East Johnson Road over Carpenter Creek?

It is owned by the County Highway Agency.