US Bridges

Waddell Creek Road over Waddell Creek

Good

Thurston County, Washington · 1.24 M N of 128th Ave SW · Structure no. 084611000000000

Built
1969
56 years old
Condition
Good
inspected June 2024
Type
Girder and Floorbeam System
Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
1,164
2020 count
Owner
County
County Highway Agency

About this bridge

Waddell Creek Road over Waddell Creek is a concrete continuous girder and floorbeam system carrying Waddell Creek Road over Waddell Creek in Thurston County, Washington. It was built in 1969, so it is 56 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 1,164 vehicles a day, roughly 15% of them trucks, projected to reach 1,872 by 2042. The structure is 130 ft (39.6 m) long and 29 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesWaddell Creek Road
CrossesWaddell Creek
Location1.24 M N of 128th Ave SW
RouteCounty Highway 15395
Coordinates46.91395, -123.05132
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating20.9 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span60 ft (18.3 m)
Deck width29 ft (8.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,164 (2020)
Projected traffic1,872 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Waddell Creek Road over Waddell Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Waddell Creek Road over Waddell 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 June 2024.

How much traffic does Waddell Creek Road over Waddell Creek carry?

About 1,164 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Waddell Creek Road over Waddell Creek?

The structure is 130 ft (39.6 m) long with a longest span of 60 ft (18.3 m) and a deck 29 ft wide.

Who owns Waddell Creek Road over Waddell Creek?

It is owned by the County Highway Agency.