US Bridges

24th DR SE over Wetland

Good

Snohomish County, Washington · 0.3 E JCT SR 527 · Structure no. 087071000000000

Built
2003
22 years old
Condition
Good
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
837
2021 count
Owner
County
County Highway Agency

About this bridge

24th DR SE over Wetland is a prestressed concrete tee beam carrying 24th DR SE over Wetland in Snohomish County, Washington. It was built in 2003, so it is 22 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 837 vehicles a day, roughly 5% of them trucks, projected to reach 1,500 by 2045. The structure is 68 ft (20.7 m) long and 49 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries24th DR SE
CrossesWetland
Location0.3 E JCT SR 527
RouteCounty Highway 17793
Coordinates47.82197, -122.20003
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length68 ft (20.7 m)
Longest span63 ft (19.3 m)
Deck width49 ft (14.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic837 (2021)
Projected traffic1,500 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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$2.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 24th DR SE over Wetland built?

It was built in 2003, making it 22 years old in 2025.

What condition is 24th DR SE over Wetland 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 May 2023.

How much traffic does 24th DR SE over Wetland carry?

About 837 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 24th DR SE over Wetland?

The structure is 68 ft (20.7 m) long with a longest span of 63 ft (19.3 m) and a deck 49 ft wide.

Who owns 24th DR SE over Wetland?

It is owned by the County Highway Agency.