US Bridges

Rd. No. 20 over Bedal Creek

Fair

Snohomish County, Washington · M.P. 35.9 Rd. No. 20 · Structure no. 060502000001463

Built
1978
47 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
140
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

Rd. No. 20 over Bedal Creek is a prestressed concrete slab carrying Rd. No. 20 over Bedal Creek in Snohomish County, Washington. It was built in 1978, so it is 47 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 5 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 140 vehicles a day, roughly 10% of them trucks, projected to reach 210 by 2045. The structure is 57 ft (17.4 m) long and 32 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesRd. No. 20
CrossesBedal Creek
LocationM.P. 35.9 Rd. No. 20
RouteFederal Lands Road 20000
Coordinates48.07959, -121.39382
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span54 ft (16.4 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (1992)
Projected traffic210 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rd. No. 20 over Bedal Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Rd. No. 20 over Bedal 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 July 2024.

How much traffic does Rd. No. 20 over Bedal Creek carry?

About 140 vehicles per day (1992 count), of which roughly 10% are trucks.

How long is Rd. No. 20 over Bedal Creek?

The structure is 57 ft (17.4 m) long with a longest span of 54 ft (16.4 m) and a deck 32 ft wide.

Who owns Rd. No. 20 over Bedal Creek?

It is owned by the U.S. Forest Service.