US Bridges

Burrows Road over Campbell Slough

Fair

Grays Harbor County, Washington · 0.9 SW JCT SR 109 · Structure no. 082031000000000

Built
1977
48 years old
Condition
Fair
inspected February 2024
Type
Slab
Prestressed Concrete
Length
156 ft
5 main spans
Daily traffic
130
2020 count
Owner
County
County Highway Agency

About this bridge

Burrows Road over Campbell Slough is a prestressed concrete slab carrying Burrows Road over Campbell Slough in Grays Harbor County, Washington. It was built in 1977, so it is 48 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 5 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 130 vehicles a day, roughly 6% of them trucks, projected to reach 158 by 2040. The structure is 156 ft (47.6 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesBurrows Road
CrossesCampbell Slough
Location0.9 SW JCT SR 109
RouteCounty Highway 28960
CountyGrays Harbor County
StateWashington
Coordinates47.04472, -124.05894
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 15
Structure length156 ft (47.6 m)
Longest span31 ft (9.5 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2020)
Projected traffic158 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Burrows Road over Campbell Slough built?

It was built in 1977, making it 48 years old in 2025.

What condition is Burrows Road over Campbell Slough 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 2024.

How much traffic does Burrows Road over Campbell Slough carry?

About 130 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Burrows Road over Campbell Slough?

The structure is 156 ft (47.6 m) long with a longest span of 31 ft (9.5 m) and a deck 24 ft wide.

Who owns Burrows Road over Campbell Slough?

It is owned by the County Highway Agency.