US Bridges

Covered Bridge RD over Grays River

GoodPosted for load

Wahkiakum County, Washington · 0.3 S JCT SR4 Off Loop RD · Structure no. 085724000000000

Built
1989
36 years old
Condition
Good
inspected November 2024
Type
Truss - Thru
Wood or Timber
Length
192 ft
2 main spans
Daily traffic
361
2014 count
Owner
County
County Highway Agency

About this bridge

Covered Bridge RD over Grays River is a wood or timber truss - thru carrying Covered Bridge RD over Grays River in Wahkiakum County, Washington. It was built in 1989, so it is 36 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. Its operating status is: posted for load restriction.

It carries about 361 vehicles a day, roughly 1% of them trucks, projected to reach 652 by 2034. The structure is 192 ft (58.5 m) long and 13 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCovered Bridge RD
CrossesGrays River
Location0.3 S JCT SR4 Off Loop RD
RouteCounty Highway 11890
Coordinates46.35472, -123.58103
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating25.4 US tons
Inventory rating13.2 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans2 (+3 approach)
Design loadH 15
Structure length192 ft (58.5 m)
Longest span73 ft (22.3 m)
Deck width13 ft (4 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deck12 ft (3.5 m)

Traffic and service

Average daily traffic361 (2014)
Projected traffic652 by 2034
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Covered Bridge RD over Grays River built?

It was built in 1989, making it 36 years old in 2025.

What condition is Covered Bridge RD over Grays River 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 November 2024.

How much traffic does Covered Bridge RD over Grays River carry?

About 361 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Covered Bridge RD over Grays River?

The structure is 192 ft (58.5 m) long with a longest span of 73 ft (22.3 m) and a deck 13 ft wide.

Who owns Covered Bridge RD over Grays River?

It is owned by the County Highway Agency.