US Bridges

Waddell Creek Rd. over Stoney Creek

Good

Thurston County, Washington · 00.3W Delphi RD · Structure no. 081935000000000

Built
1976
49 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
1,531
2021 count
Owner
County
County Highway Agency

About this bridge

Waddell Creek Rd. over Stoney Creek is a concrete slab carrying Waddell Creek Rd. over Stoney Creek in Thurston County, Washington. It was built in 1976, so it is 49 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 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 1,531 vehicles a day, roughly 15% of them trucks, projected to reach 2,367 by 2043. The structure is 23 ft (7 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesWaddell Creek Rd.
CrossesStoney Creek
Location00.3W Delphi RD
RouteCounty Highway 15395
Coordinates46.96753, -123.03537
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.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,531 (2021)
Projected traffic2,367 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$328,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Waddell Creek Rd. over Stoney Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Waddell Creek Rd. over Stoney 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 May 2023.

How much traffic does Waddell Creek Rd. over Stoney Creek carry?

About 1,531 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Waddell Creek Rd. over Stoney Creek?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 31 ft wide.

Who owns Waddell Creek Rd. over Stoney Creek?

It is owned by the County Highway Agency.