US Bridges

Wenzel Slough Road over Vance Creek

Poor

Grays Harbor County, Washington · 01.3 W JCT 9641 · Structure no. 080002000000000

Built
1971
54 years old
Condition
Poor
inspected January 2024
Type
Slab
Prestressed Concrete
Length
95 ft
3 main spans
Daily traffic
124
2020 count
Owner
County
County Highway Agency

About this bridge

Wenzel Slough Road over Vance Creek is a prestressed concrete slab carrying Wenzel Slough Road over Vance Creek in Grays Harbor County, Washington. It was built in 1971, so it is 54 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 124 vehicles a day, projected to reach 184 by 2040. The structure is 95 ft (28.9 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesWenzel Slough Road
CrossesVance Creek
Location01.3 W JCT 9641
RouteCounty Highway 64370
Coordinates46.9887, -123.42478
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 12 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19 US tons
Inventory rating9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 15
Structure length95 ft (28.9 m)
Longest span31 ft (9.5 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic124 (2020)
Projected traffic184 by 2040
Trucks0%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Wenzel Slough Road over Vance Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Wenzel Slough Road over Vance Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.

How much traffic does Wenzel Slough Road over Vance Creek carry?

About 124 vehicles per day (2020 count).

How long is Wenzel Slough Road over Vance Creek?

The structure is 95 ft (28.9 m) long with a longest span of 31 ft (9.5 m) and a deck 24 ft wide.

Who owns Wenzel Slough Road over Vance Creek?

It is owned by the County Highway Agency.