US Bridges

Road over Green River

Good

King County, Washington · 5.3 MI W of Tacoma Pass · Structure no. 060505000001528

Built
1995
30 years old
Condition
Good
inspected August 2021
Type
Slab
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
17
1991 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Green River is a prestressed concrete slab carrying Road over Green River in King County, Washington. It was built in 1995, so it is 30 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 17 vehicles a day, projected to reach 25 by 2045. The structure is 66 ft (20.1 m) long and 16 ft wide. If it were closed, the detour would be 27.3 mi (44 km).

Location

Open in Google Maps
CarriesRoad
CrossesGreen River
Location5.3 MI W of Tacoma Pass
RouteFederal Lands Road 52
CountyKing County
StateWashington
Coordinates47.17861, -121.37639
Functional classRural 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 inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.1 US tons
Inventory rating45.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length66 ft (20.1 m)
Longest span65 ft (19.7 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17 (1991)
Projected traffic25 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed27.3 mi (44 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road over Green River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Road over Green River 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 August 2021.

How much traffic does Road over Green River carry?

About 17 vehicles per day (1991 count).

How long is Road over Green River?

The structure is 66 ft (20.1 m) long with a longest span of 65 ft (19.7 m) and a deck 16 ft wide.

Who owns Road over Green River?

It is owned by the U.S. Forest Service.