US Bridges

Franklin Road over Green River

FairPosted for load

King County, Washington · 4.0 MI E of SR-169 · Structure no. 082247000000000

Built
1914
111 years old, rebuilt 1991
Condition
Fair
inspected May 2023
Type
Truss - Deck
Steel
Length
447 ft
1 main span
Daily traffic
350
2021 count
Owner
County
County Highway Agency

About this bridge

Franklin Road over Green River is a steel truss - deck carrying Franklin Road over Green River in King County, Washington. It was built in 1914 and reconstructed in 1991, so it is 111 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. Its operating status is: posted for load restriction.

It carries about 350 vehicles a day, roughly 3% of them trucks, projected to reach 600 by 2042. The structure is 447 ft (136.2 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesFranklin Road
CrossesGreen River
Location4.0 MI E of SR-169
RouteCounty Highway 93687
CountyKing County
StateWashington
Coordinates47.30119, -121.95074
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating18.5 US tons
Inventory rating14.3 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckCorrugated steel
Main spans1 (+2 approach)
Design loadHS 20
Structure length447 ft (136.2 m)
Longest span288 ft (87.8 m)
Deck width25 ft (7.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2021)
Projected traffic600 by 2042
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$11.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Franklin Road over Green River built?

It was built in 1914, making it 111 years old in 2025. It was reconstructed in 1991.

What condition is Franklin Road over Green River 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 Franklin Road over Green River carry?

About 350 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Franklin Road over Green River?

The structure is 447 ft (136.2 m) long with a longest span of 288 ft (87.8 m) and a deck 25 ft wide.

Who owns Franklin Road over Green River?

It is owned by the County Highway Agency.