US Bridges

SW Nevada ST over Longfellow Creek

Good

King County, Washington · SW Nevada ST & 28th Ave · Structure no. 085682000000000

Built
1988
37 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
107 ft
1 main span
Daily traffic
400
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

SW Nevada ST over Longfellow Creek is a prestressed concrete stringer/multi-beam or girder carrying SW Nevada ST over Longfellow Creek in King County, Washington. It was built in 1988, so it is 37 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 400 vehicles a day, roughly 2% of them trucks, projected to reach 400 by 2040. The structure is 107 ft (32.6 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSW Nevada ST
CrossesLongfellow Creek
LocationSW Nevada ST & 28th Ave
RouteCity Street 1140
Coordinates47.56546, -122.36779
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.
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 on dry land well above flood water elevations
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating93 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span101 ft (30.8 m)
Deck width22 ft (6.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2022)
Projected traffic400 by 2040
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SW Nevada ST over Longfellow Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is SW Nevada ST over Longfellow 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 September 2023.

How much traffic does SW Nevada ST over Longfellow Creek carry?

About 400 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is SW Nevada ST over Longfellow Creek?

The structure is 107 ft (32.6 m) long with a longest span of 101 ft (30.8 m) and a deck 22 ft wide.

Who owns SW Nevada ST over Longfellow Creek?

It is owned by the City or Municipal Highway Agency.