US Bridges

SE Issq-Fall Cty over Wetland

Good

King County, Washington · .03 MI E of JCT 247 Pl SE · Structure no. 089269000000000

Built
2021
4 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
408 ft
3 main spans
Daily traffic
10,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

SE Issq-Fall Cty over Wetland is a concrete continuous stringer/multi-beam or girder carrying SE Issq-Fall Cty over Wetland in King County, Washington. It was built in 2021, so it is 4 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 10,000 vehicles a day, roughly 5% of them trucks, projected to reach 15,000 by 2040. The structure is 408 ft (124.4 m) long and 67 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSE Issq-Fall Cty
CrossesWetland
Location.03 MI E of JCT 247 Pl SE
RouteCity Street 1136
Coordinates47.56236, -122.00694
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating46.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHL 93
Structure length408 ft (124.4 m)
Longest span170 ft (51.8 m)
Deck width67 ft (20.4 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2020)
Projected traffic15,000 by 2040
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$24.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE Issq-Fall Cty over Wetland built?

It was built in 2021, making it 4 years old in 2025.

What condition is SE Issq-Fall Cty 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 September 2023.

How much traffic does SE Issq-Fall Cty over Wetland carry?

About 10,000 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is SE Issq-Fall Cty over Wetland?

The structure is 408 ft (124.4 m) long with a longest span of 170 ft (51.8 m) and a deck 67 ft wide.

Who owns SE Issq-Fall Cty over Wetland?

It is owned by the City or Municipal Highway Agency.