US Bridges

Heise Road over Wildcat Creek

Fair

Grays Harbor County, Washington · 0.06 S JCT 9710 · Structure no. 082614000000000

Built
1980
45 years old
Condition
Fair
inspected February 2023
Type
Slab
Prestressed Concrete
Length
140 ft
3 main spans
Daily traffic
347
2023 count
Owner
County
County Highway Agency

About this bridge

Heise Road over Wildcat Creek is a prestressed concrete slab carrying Heise Road over Wildcat Creek in Grays Harbor County, Washington. It was built in 1980, so it is 45 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 347 vehicles a day, roughly 15% of them trucks, projected to reach 279 by 2043. The structure is 140 ft (42.7 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesHeise Road
CrossesWildcat Creek
Location0.06 S JCT 9710
RouteCounty Highway 89151
CountyGrays Harbor County
StateWashington
Coordinates47.02944, -123.345
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating74 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic347 (2023)
Projected traffic279 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Heise Road over Wildcat Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Heise Road over Wildcat Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does Heise Road over Wildcat Creek carry?

About 347 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Heise Road over Wildcat Creek?

The structure is 140 ft (42.7 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns Heise Road over Wildcat Creek?

It is owned by the County Highway Agency.