US Bridges

SR 169 over Green R

Fair

King County, Washington · 5.3 N JCT SR 164 · Structure no. 000000IR0000000

Built
1932
93 years old
Condition
Fair
inspected May 2023
Type
Truss - Deck
Steel
Length
688 ft
4 main spans
Daily traffic
11,364
2023 count
Owner
State
State Highway Agency

About this bridge

SR 169 over Green R is a steel truss - deck carrying SR 169 over Green R in King County, Washington. It was built in 1932, so it is 93 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 11,364 vehicles a day, roughly 8% of them trucks, projected to reach 14,775 by 2039. The structure is 688 ft (209.7 m) long and 28 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesSR 169
CrossesGreen R
Location5.3 N JCT SR 164
RouteState Highway 169
CountyKing County
StateWashington
Coordinates47.27637, -121.99178
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating40 US tons
Inventory rating24 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadUnknown
Structure length688 ft (209.7 m)
Longest span147 ft (44.8 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,364 (2023)
Projected traffic14,775 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$13.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 169 over Green R built?

It was built in 1932, making it 93 years old in 2025.

What condition is SR 169 over Green R in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does SR 169 over Green R carry?

About 11,364 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 169 over Green R?

The structure is 688 ft (209.7 m) long with a longest span of 147 ft (44.8 m) and a deck 28 ft wide.

Who owns SR 169 over Green R?

It is owned by the State Highway Agency.