US Bridges

Swede Heaven RD over Segelson Creek

Good

Snohomish County, Washington · 1.7 NW JCT SR 530 · Structure no. 079704000000000

Built
1981
44 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
629
2021 count
Owner
County
County Highway Agency

About this bridge

Swede Heaven RD over Segelson Creek is a prestressed concrete tee beam carrying Swede Heaven RD over Segelson Creek in Snohomish 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 629 vehicles a day, roughly 15% of them trucks, projected to reach 1,000 by 2044. The structure is 55 ft (16.8 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSwede Heaven RD
CrossesSegelson Creek
Location1.7 NW JCT SR 530
RouteCounty Highway 84150
Coordinates48.28356, -121.71571
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span52 ft (15.8 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic629 (2021)
Projected traffic1,000 by 2044
Trucks15%
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$2.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Swede Heaven RD over Segelson Creek built?

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

What condition is Swede Heaven RD over Segelson Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Swede Heaven RD over Segelson Creek carry?

About 629 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Swede Heaven RD over Segelson Creek?

The structure is 55 ft (16.8 m) long with a longest span of 52 ft (15.8 m) and a deck 31 ft wide.

Who owns Swede Heaven RD over Segelson Creek?

It is owned by the County Highway Agency.