US Bridges

Road over S Prairie Creek

Good

Pierce County, Washington · 5.9 MI E of Sunset Lake · Structure no. 060507000001288

Built
1966
59 years old, rebuilt 2005
Condition
Good
inspected September 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
41
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over S Prairie Creek is a prestressed concrete stringer/multi-beam or girder carrying Road over S Prairie Creek in Pierce County, Washington. It was built in 1966 and reconstructed in 2005, so it is 59 years old, older 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 41 vehicles a day, projected to reach 61 by 2045. The structure is 43 ft (13.2 m) long and 21 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesRoad
CrossesS Prairie Creek
Location5.9 MI E of Sunset Lake
RouteFederal Lands Road 77200
Coordinates47.07481, -121.93341
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68 US tons
Inventory rating49.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length43 ft (13.2 m)
Longest span41 ft (12.6 m)
Deck width21 ft (6.5 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (1992)
Projected traffic61 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 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 S Prairie Creek built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2005.

What condition is Road over S Prairie 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 2022.

How much traffic does Road over S Prairie Creek carry?

About 41 vehicles per day (1992 count).

How long is Road over S Prairie Creek?

The structure is 43 ft (13.2 m) long with a longest span of 41 ft (12.6 m) and a deck 21 ft wide.

Who owns Road over S Prairie Creek?

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