US Bridges

Creston South Road over Sinking Creek

Good

Lincoln County, Washington · 6.86 S SR No 2 · Structure no. 080947000000000

Built
1973
52 years old
Condition
Good
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
112
2021 count
Owner
County
County Highway Agency

About this bridge

Creston South Road over Sinking Creek is a prestressed concrete tee beam carrying Creston South Road over Sinking Creek in Lincoln County, Washington. It was built in 1973, so it is 52 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 112 vehicles a day, roughly 40% of them trucks, projected to reach 152 by 2042. The structure is 60 ft (18.3 m) long and 30 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesCreston South Road
CrossesSinking Creek
Location6.86 S SR No 2
RouteCounty Highway 94750
Coordinates47.67206, -118.54817
Functional classRural Major Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating38.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112 (2021)
Projected traffic152 by 2042
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Creston South Road over Sinking Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Creston South Road over Sinking 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 November 2023.

How much traffic does Creston South Road over Sinking Creek carry?

About 112 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is Creston South Road over Sinking Creek?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.

Who owns Creston South Road over Sinking Creek?

It is owned by the County Highway Agency.