US Bridges

County Line Road over Mf Wildcat Creek

Good

Grays Harbor County, Washington · 0.3 N JCT 79740 · Structure no. 089483000000000

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
152
2023 count
Owner
County
County Highway Agency

About this bridge

County Line Road over Mf Wildcat Creek is a prestressed concrete slab carrying County Line Road over Mf Wildcat Creek in Grays Harbor County, Washington. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 152 vehicles a day, roughly 5% of them trucks, projected to reach 200 by 2043. The structure is 46 ft (14 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesCounty Line Road
CrossesMf Wildcat Creek
Location0.3 N JCT 79740
RouteCounty Highway 79900
CountyGrays Harbor County
StateWashington
Coordinates47.08446, -123.26019
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length46 ft (14 m)
Longest span44 ft (13.4 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic152 (2023)
Projected traffic200 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Line Road over Mf Wildcat Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is County Line Road over Mf Wildcat 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 October 2023.

How much traffic does County Line Road over Mf Wildcat Creek carry?

About 152 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is County Line Road over Mf Wildcat Creek?

The structure is 46 ft (14 m) long with a longest span of 44 ft (13.4 m) and a deck 31 ft wide.

Who owns County Line Road over Mf Wildcat Creek?

It is owned by the County Highway Agency.