US Bridges

Renton Ave S over SR 405

Good

King County, Washington · 0.9 N JCT SR 515 · Structure no. 0014052D0000000

Built
1994
31 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
142 ft
2 main spans
Daily traffic
1,981
2012 count
Owner
State
State Highway Agency

About this bridge

Renton Ave S over SR 405 is a concrete continuous box beam or girders - multiple carrying Renton Ave S over SR 405 in King County, Washington. It was built in 1994, so it is 31 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 1,981 vehicles a day, roughly 8% of them trucks, projected to reach 3,061 by 2033. The structure is 142 ft (43.3 m) long and 37 ft wide.

CarriesRenton Ave S
CrossesSR 405
Location0.9 N JCT SR 515
RouteCity Street 0
Coordinates47.48014, -122.20111
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.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length142 ft (43.3 m)
Longest span77 ft (23.5 m)
Deck width37 ft (11.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,981 (2012)
Projected traffic3,061 by 2033
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Renton Ave S over SR 405 built?

It was built in 1994, making it 31 years old in 2025.

What condition is Renton Ave S over SR 405 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 Renton Ave S over SR 405 carry?

About 1,981 vehicles per day (2012 count), of which roughly 8% are trucks.

How long is Renton Ave S over SR 405?

The structure is 142 ft (43.3 m) long with a longest span of 77 ft (23.5 m) and a deck 37 ft wide.

Who owns Renton Ave S over SR 405?

It is owned by the State Highway Agency.